621 Series Alternator - Spindle Mount(Single Foot) - 100A - 12VFeatures: 100A 12V Spindle Mount (Single Foot) 1-2"  Single Deep Vee Pulley Isolated Ground 1″ Motorola-Style Mounting;  Typical for Westerbeke, Lehman, Hino & Pathfinder Engines 2″ Delco-Style Mounting;  Typical for Volvo Penta (Gas & Diesel), John Deere, Perkins, Mercruiser, Pleasurecraft, Crusader, Indmar, Marine Power & other GM-based Engines This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Owner's Manual (pdf)

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Premium Replacement Alternator with Single Groove Pulley - 12V, 55APremium replacement alternator that will fit late model Mercruiser, 12 Volt, 55 Amp, Internal regulator. 2-inch mounting foot. Single groove pulley included.Features: All alternators are engineered for performance and reliability All alternators are engineered and manufactured with precision and quality All alternators must meet or exceed OEM performance before being boxed Warranty Information:When properly installed, all ARCO products are warrantied against defects in materials and workmanship for a period of 12 months for leisure use and 90 days for commercial or racing applications. Add an extra year of warranty to your rotating electric ARCO product (Tilt/Trim Motors, Alternators, Outboard Starters, and Inboard Starters) when you register your product within 30 days of purchase. You can register your product by visiting arcomarine.com/product-registration Replaces:MARINE POWER Alternator 1210-000MERCURY Alternator 12449MERCURY Alternator 78403A1MERCURY Alternator 78403A2MERCURY Alternator 817119A1MERCURY Alternator 817119A4MERCURY Alternator 92497A3MERCURY Alternator 98555MERCURY Alternator 98555A1SIERRA Alternator 18-5957SIERRA Alternator 18-5966This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Amperage: 55A Voltage: 12v Box Dimensions: 7"H x 8"W x 8"L WT: 9.75 lbs UPC: 693006001258 Quick Guide (pdf)

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Premium Replacement Alternator with Multi-Groove Pulley - 12V 55AReplacement alternator that will fit late model Mercruiser, 12 Volt, 55 Amp, Internal regulator 2-inch mounting foot, multi-groove serpentine pulley included.Features: All alternators are engineered for performance and reliability All alternators are engineered and manufactured with precision and quality All alternators must meet or exceed OEM performance before being boxed Warranty Information:When properly installed, all ARCO products are warrantied against defects in materials and workmanship for a period of 12 months for leisure use and 90 days for commercial or racing applications. Add an extra year of warranty to your rotating electric ARCO product (Tilt/Trim Motors, Alternators, Outboard Starters, and Inboard Starters) when you register your product within 30 days of purchase. You can register your product by visiting arcomarine.com/product-registration Replaces:MERCURY Alternator 807652TSIERRA Alternator 18-5967This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Amperage: 55A Voltage: 12v Box Dimensions: 8"H x 8"W x 9"L WT: 11.3 lbs UPC: 693006001265 Quick Guide (pdf)

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Pulley Kit for Yanmar 3JH5, 3JH4-E, 4JH4-E, 4JH5, 4JH5-EAltMount® Serpentine Pulley Conversion Kit for Yanmar Diesel EnginesYanmar Engines Covered: 3JH5, 3JH4-E, 4JH4-E, 4JH5Kit Includes: Three Ten-Groove (J10) Pulleys, Two J10, 44.5″ Circumference Serpentine Belts (one spare) & Mounting HardwareNote:  If you specify an AT-200A Alternator, a longer belt length may be required.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

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Alternator 170 AMP 12V 3.15" Dual Foot Saddle J10 PulleyAlternator, XT Series, 170A, 12V, Saddle Mount (Dual Foot), 3.15in, J10 AltMount Serpentine Pulley, Case GroundHitachi-Style Mounting; Typical for Yanmar, Westerbeke, Lehman & Perkins-Sabre EnginesReplaces: AT-DF-165-12-IG, AT-DF-165-J10This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Amperage: 170A Voltage: 12v Box Dimensions: 9"H x 10"W x 10"L WT: 14 lbs UPC: 676205503631 Brochure (pdf)

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Alternator 170 AMP Kit 12V 3.15" Dual Foot Saddle K6 Pulley Regulator & Temp SensorKit Includes: XT-DF-170-K6 Alternator, MC-618 Regulator, Temperature Sensors & Mounting HardwareXT Series Alternator: 170A, 12V, Saddle Mount (Dual Foot), 3.15in, K6 Serpentine Pulley, Case GroundHitachi-Style Mounting; Typical for Yanmar, Westerbeke, Lehman & Perkins-Sabre EnginesReplaces: AT-DF-MC-165-KIT, AT-DF-165-K6-KITThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Amperage: 170A Voltage: 12v Box Dimensions: 10"H x 11"W x 14"L WT: 17.5 lbs UPC: 676205503594 Brochure (pdf)

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Alternator 120 AMP Kit 120V 3.15" Dual Foot Saddle J10 Pulley Regulator & Temp SensorKit Includes: a 60-120-J10 Alternator, MC-618 Regulator, Temperature Sensors, Mounting Hardware60-120-J10 Alternator: 120A, 12V, Saddle Mount (Dual Foot), 3.15in, J10 AltMount Serpentine Pulley, Isolated GroundHitachi-Style Mounting; Typical for Yanmar, Westerbeke, Lehman & Perkins-Sabre EnginesReplaces: 60-YP-MC-120-SR-KITThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Amperage: 120A Voltage: 12v Box Dimensions: 11"H x 11"W x 14"L WT: 16.1 lbs UPC: 676205751155 Brochure (pdf)

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Alternator 100 AMP 12V 3.15" Dual Foot Saddle K6 Pulley with Isolated GroundAlternator, 60 Series, 100A, 12V, Saddle Mount (Dual Foot), 3.15in, K6 Serpentine Pulley, Isolated Ground Hitachi-Style Mounting; Typical for Yanmar, Westerbeke, Lehman & Perkins-Sabre EnginesReplaces: 60-100-SR-IGThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Amperage: 100A Voltage: 12v Box Dimensions: 9"H x 9"W x 10"L WT: 13 lbs UPC: 676205750578 Brochure (pdf)

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170 AMP Alternator Kit - 12V 4" Dual Foot Saddle Mount with K6 Pulley, Regulator & Temp SensorBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. They install high-reliability bearings, robust rectifier diodes, and improved heat-sinking capabilities on all their alternators to ensure improved system reliability combined with increased charging power.Kit Includes: XT-DF4-170-K6 Alternator, MC-618-H Regulator, Temperature Sensors & Mounting HardwareFeatures: 4" Dual-Foot K6 Serpentine Pulley 170A 12V Case Ground J-180 Mount; Typical for John Deere, Cummins, & Caterpillar Engines This product may not be returned to the original point of purchase.  Please contact the manufacturer directly with any issues or concerns.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Amperage: 170A Voltage: 12v Box Dimensions: 11"H x 11"W x 14"L WT: 18.35 lbs UPC: 676205503471 Brochure (pdf)

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Alternator 170 AMP Kit 12V 3.15" Dual Foot Saddle J10 Pulley Regulator & Temp SensorKit Includes: XT-DF-170-J10 Alternator, MC-618 Regulator, Temperature Sensors & Mounting HardwareXT Series Alternator: 170A, 12V, Saddle Mount (Dual Foot), 3.15in, J10 AltMount Serpentine Pulley, Case GroundHitachi-Style Mounting; Typical for Yanmar, Westerbeke, Lehman & Perkins-Sabre EnginesReplaces: AT-DF-MC-165-KIT, AT-DF-165-J10-KITThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Amperage: 170A Voltage: 12v Box Dimensions: 10"H x 11"W x 14"L WT: 17 lbs UPC: 676205503648 Brochure (pdf)

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Alternator 250 AMP 12V 3.15" Dual Foot Saddle J10 PulleyAlternator, XT Series, 250A, 12V, Saddle Mount (Dual Foot), 3.15in, J10 AltMount Serpentine Pulley, Case GroundHitachi-Style Mounting; Typical for Yanmar, Westerbeke, Lehman & Perkins-Sabre EnginesReplaces: AT-DF-200-12-IG, AT-DF-200-J10This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Amperage: 250A Voltage: 12v Box Dimensions: 9"H x 10"W x 10"L WT: 16.25 lbs UPC: 676205502269 Brochure (pdf)

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Alternator 100 AMP Kit 12V 1-2" Single Foot Spindle Mount K6 Pulley Regulator & Temp SensorKit Includes: 621-100-K6 Alternator, MC-618 Regulator, Temperature Sensors, Mounting Hardware621-100-K6 Alternator: 100A, 12V, Spindle Mount (Single Foot), 1-2in, K6 Serpentine Pulley, Isolated Ground1" Motorola-Style Mounting;  Typical for Westerbeke, Lehman, Hino & Pathfinder Engines2" Delco-Style Mounting;  Typical for Volvo Penta (Gas & Diesel), John Deere, Perkins, Mercruiser, Pleasurecraft, Crusader, Indmar, Marine Power & other GM-based EnginesReplaces: 621-VUP-MC-100-SR-KITThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Amperage: 100A Voltage: 12v Box Dimensions: 10"H x 11"W x 14"L WT: 9.25 lbs UPC: 676205750943 Brochure (pdf)

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Max Charge MC-618 Regulator 12V with Harness Multi-StageThe MC-618-H premium 12-volt multi-stage voltage regulator provides the ultimate in charging safety and control. Includes wiring harness. Features: Intelligent multi-stage regulation. Digital numeric LED display. Epoxy-encapsulated circuitry. For use with 12 volt systems Wiring harness included Can be used to drive twin alternator installations. For use with P-type externally regulated alternators Dash lamp and auxiliary lamp terminals Small engine mode Magnetic programming tool included LiFePo4 (lithium) program Optional alternator and battery temperature sensors sold separately This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

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621 Series 120A Kit with MC-618 Regulator, T-Sensor, K6 Pulley, Single Foot & Mounting HardwareKit Includes:  621-120-K6 Alternator MC-618 Regulator Temperature Sensors Mounting Hardware 621-120-K6 Alternator: 120A, 12V, Spindle Mount (Single Foot), 1-2in, K6 Serpentine Pulley, Isolated Ground1" Motorola-Style Mounting;  Typical for Westerbeke, Lehman, Hino & Pathfinder Engines2" Delco-Style Mounting;  Typical for Volvo Penta (Gas & Diesel), John Deere, Perkins, Mercruiser, Pleasurecraft, Crusader, Indmar, Marine Power & other GM-based EnginesThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Voltage: 12v Amperage: 120A Box Dimensions: 10"H x 10"W x 14"L WT: 7.46 lbs UPC: 676205750950 Quick Guide (pdf)

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Alternator 3.15" Dual Foot Saddle J10 Serpentine Pulley - 170A - 12VBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. Balmar installs high reliability bearings, robust rectifier diodes and improved heat-sinking capabilities on all our alternators to ensure improved system reliability combined with increased charging power.Features: 3.15" Dual Foot Saddle J10 Serpentine Pulley 170A 12V This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Voltage: 12v Amperage: 170A Box Dimensions: 9"H x 10"W x 10"L WT: 13.8 lbs UPC: 676205500777 Brochure (pdf)

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Temp Sensor Battery - 20'Temperature Sensor, Battery - 20' LengthThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

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Replacement Alternator for Mercury Engines - 135 & 150 HPReplacement alternator that will fit Mercury Outboard Engines 135 HP - 150 HP, 12 Volt, 55 AMP, 4 grooves, pulley included. Features: All alternators are engineered for performance and reliability. All alternators are engineered and manufactured with precision and quality. All alternators must meet or exceed OEM performance before being boxed. Warranty Information:When properly installed, all ARCO products are warrantied against defects in materials and workmanship for 12 months for leisure use and 90 days for commercial or racing applications. Add an extra year of warranty to your rotating electric ARCO product (Tilt/Trim Motors, Alternators, Outboard Starters, and Inboard Starters) when you register your product within 30 days of purchase. You can register your product by visiting arcomarine.com/product-registration Replaces: MERCURY Alternator 8M0065239 MERCURY Alternator 8M0057693  MERCURY Alternator 8M0062515 This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

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Signal Stabilizer for TachometerFor use with AT-Series Alternators when the Tachometer does not provide 3-pole alternator output recognition.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Brochure (pdf)

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Pulley Kit for Yanmar 4JH3-TE, 4JH3-HTEAltMount®Serpentine Pulley Conversion Kit for Yanmar Diesel EnginesYanmar Engines Covered: 4JH3, -TE, -THEKit Includes: Three Ten-Groove (J10) Pulleys, Two J10, 48″ Circumference Serpentine Belts (one spare) & Mounting HardwareNote: If you specify an AT-200A Alternator, a longer belt length may be required.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

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Pulley Kit for Volvo D2-55, A, B, C, D, E, FAltMount® Serpentine Pulley Conversion Kit for Volvo Penta Diesel EnginesVolvo Penta Engines Covered: D2-55A, B, C, D, E, FKit Includes: Three Ten-Groove (J10) Pulleys, Two J10, 44″ Circumference Serpentine Belts (one spare) & Mounting HardwareNote: If you specify an AT-200A Alternator, a longer belt length may be required.

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Alternator Protection Module - 48VThe Balmar APM provides best-in-class surge protection using the latest technology developed for the automotive industry. Protect Alternators From Damaging Effects: Battery switch disconnects Lithium battery BMS disconnects Surges from solenoids, combiners, starters, and other motors. The Balmar APM excels in both short-duration and longer-duration spikes, where other products fail.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

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Alternator 100 AMP Kit 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley Regulator & Temp SensorKIt Includes: 621-100-DV Alternator, MC-618 Regulator, Temperature Sensors, Mounting Hardware621-100-DV Alternator: 100A, 12V, Spindle Mount (Single Foot), 1-2in, Dual Deep Vee Pulley, Isolated Ground1" Motorola-Style Mounting;  Typical for Westerbeke, Lehman, Hino & Pathfinder Engines2" Delco-Style Mounting;  Typical for Volvo Penta (Gas & Diesel), John Deere, Perkins, Mercruiser, Pleasurecraft, Crusader, Indmar, Marine Power & other GM-based EnginesReplaces: 621-VUP-MC-100-SR-KITThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Amperage: 100A Voltage: 12v Box Dimensions: 10"H x 10"W x 14"L WT: 14 lbs UPC: 676205750936 Brochure (pdf)

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Alternator 100 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley with Isolated GroundAlternator, 621 Series, 100A, 12V, Spindle Mount (Single Foot), 1-2in, Dual Deep Vee Pulley, Isolated Ground 1" Motorola-Style Mounting;  Typical for Westerbeke, Lehman, Hino & Pathfinder Engines 2" Delco-Style Mounting;  Typical for Volvo Penta (Gas & Diesel), John Deere, Perkins, Mercruiser, Pleasurecraft, Crusader, Indmar, Marine Power & other GM-based EnginesReplaces: 621-100-SR-IGThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Amperage: 100A Voltage: 12v Box Dimensions: 9"H x 10"W x 10"L WT: 13.65 lbs UPC: 676205750790 Brochure (pdf)

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Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley with Isolated GroundAlternator, 621 Series, 120A, 12V, Spindle Mount (Single Foot), 1-2in, Dual Deep Vee Pulley, Isolated Ground 1" Motorola-Style Mounting;  Typical for Westerbeke, Lehman, Hino & Pathfinder Engines 2" Delco-Style Mounting;  Typical for Volvo Penta (Gas & Diesel), John Deere, Perkins, Mercruiser, Pleasurecraft, Crusader, Indmar, Marine Power & other GM-based EnginesReplaces: 621-120-SR-IGThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Amperage: 120A Voltage: 12v Box Dimensions: 9"H x 10"W x 10"L WT: 13.6 lbs UPC: 676205131087 Brochure (pdf)

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Max Charge MC618 Multi-Stage Regulator without Harness - 12VBalmar's MC-618 Regulator communicates with the SG200 Battery Monitor to provide information to the SG200 Color Display and Smartphone App.  Now you can see how the MC-618 Regulator is directing your onboard charging activity from either the SG200 2" Color Display and/or the optional Bluetooth Smartphone App.  Basic setup functions can be accomplished from the SG200 Color Display, Smartphone App, or the traditional on-regulator programming tool.  Advanced Programming functions are available from the Bluetooth Smartphone App.  Balmar customers have been asking for years to view regulator information from outside the engine compartment.  Balmar has accomplished this goal without the need for a separate dedicated display device!This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

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Alternator Protection Module APM24 - 24VAlternators can be subjected to voltage spikes caused by lithium battery shutdowns, intermittent connections, and other over-voltage events.  Balmar has introduced a robust Alternator Protection Module which helps to protect the alternator’s diodes and internal voltage regulator against spikes (clamping up to 60V) and sustained over-voltage conditions (beginning around 20V for the 12V version).  The APM can absorb multiple surges of such energy and can absorb surges in excess of 200 amps without failure to continually protect your alternator.  Visual and audible alarms indicate if the device has been compromised and needs replacement.Balmar APM devices provide intelligent, robust, solid-state protection in a small easily mounted package at the rear of the alternator between the B+ and B- terminals.  Balmar APM devices can be used to protect all alternator brands.  Balmar APM devices meet ISO 16750-2 for Load Dump Protection and ISO 7637-2 for Surge Protection.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

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Temperature Sensor Alternator - 80" LengthIntended for longer runs when the standard 54" Alternator Temp Sensor (PN: MC-TS-A) is insufficient.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

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Regulator Kit for Valeo with MC-618Balmar's MC-618 Regulator communicates with the SG200 Battery Monitor to provide information to the SG200 Color Display and Smartphone App.  Now you can see how the MC-618 Regulator is directing your onboard charging activity from either the SG200 2" Color Display and/or the optional Bluetooth Smartphone App.  Basic setup functions can be accomplished from the SG200 Color Display, Smartphone App, or the traditional on-regulator programming tool.  Advanced Programming functions are available from the Bluetooth Smartphone App.  Balmar customers have been asking for years to view regulator information from outside the engine compartment.  Balmar has accomplished this goal without the need for a separate dedicated display device!Kit Includes:   30-SR12-02 Internal Smart Ready® Regulator Conversion Kit MC-618 External Regulator Wire Harness MC-TS-A & MC-TS-B Temp Sensors This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

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Alternator 120 Amp 12V 3.15" Dual foot Saddle Single K6 Pulley with Isolated GroundingAlternator, 60 Series, 120A, 12V, Saddle Mount (Dual Foot), 3.15in, K6 Serpentine Pulley, Isolated Ground Hitachi-Style Mounting; Typical for Yanmar, Westerbeke, Lehman & Perkins-Sabre Engines.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Voltage: 12v Amperage: 120A Box Dimensions: 9"H x 9"W x 10"L WT: 13.35 lbs UPC: 676205750585 Brochure (pdf)

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Alternator 170 Amp, 12V Single Foot Internal Regulator K6 PulleyAlternator, XT Series, 170A, 12V, Spindle Mount (Single Foot), 1-2in, K6 Serpentine Pulley, Case Ground1″ Motorola-Style Mounting;  Typical for Westerbeke, Lehman, Hino & Pathfinder Engines2″ Delco-Style Mounting;  Typical for Volvo Penta (Gas & Diesel), John Deere, Perkins, Mercruiser, Pleasurecraft, Crusader, Indmar, Marine Power & other GM-based EnginesThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Voltage: 12v Amperage: 170A Box Dimensions: 9"H x 9"W x 10"L WT: 14.3 lbs UPC: 676205501996 Brochure (pdf)

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Temp Sensor Alternator - 54"Temperature Sensor, Alternator - 54" LengthThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

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Belt Buddy w/o Adjustment ArmUniversal Belt Buddy Mechanism;  for use with exising adjustment armsDoes not come with the Balmar Universal Adjustment Arm (UAA).Caution:  This approach sacrifices some “travel” in the existing adjustment arm so the BBU mechanism can be anchored to the arm.  Make certain your alternator mounting does not need this travel before purchasing the BBU.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

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Alternator 3.15" Dual Foot Saddle J10 Serpentine Pulley Regulator & Temp Sensor - 170A Kit - 12VBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. Balmar installs high reliability bearings, robust rectifier diodes and improved heat-sinking capabilities on all our alternators to ensure improved system reliability combined with increased charging power.Features: 3.15" Dual Foot Saddle J10 Serpentine Pulley Regulator & Temp Sensor 170A Kit 12V This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Voltage: 12v Amperage: 170A Box Dimensions: 11"H x 11"W x 14"L WT: 16.65 lbs UPC: 676205500784 Brochure (pdf)

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Alternator Vortec K6 Serpentine Pulley Regulator & Temp Sensor - 170A - 12VBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. Balmar installs high reliability bearings, robust rectifier diodes and improved heat-sinking capabilities on all our alternators to ensure improved system reliability combined with increased charging power.Features: Vortec K6 Serpentine Pulley Regulator & Temp Sensor 170A Kit 12V This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Voltage: 12v Amperage: 170A Box Dimensions: 11"H x 11"W x 14"L WT: 17.25 lbs UPC: 676205500883 Brochure (pdf)

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Belt Buddy w/Universal Adjustment ArmTo utilize only the adjustment mechanism with an existing adjustment arm, purchase part number BBU.Caution:  This approach sacrifices some “travel” in the existing adjustment arm so the BBU mechanism can be anchored to the arm.  Make certain your alternator mounting does not need this travel before purchasing the BBU.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

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Universal Adjustment ArmFeatures: This part number is for the “Arm Only”, It does not come with the Belt Buddy Adjustment Mechanism The Belt Buddy Mechanism which goes with the UAA is part number BB, grouped together the set is part number UBB The Belt Buddy Mechanism which goes with most any adjustment arm is part number BBU The UAA is 10.3″ long and the adjustment slot provides up to 4.5″ of travel.  The adjustment slot is 0.53″ wide This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

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Premium Replacement Alternator with Multi-Groove Serpentine Pulley - 12V & 65AReplacement alternator that will fit late model Mercruiser, 12 Volt, 65 Amp, Internal Regulator 2-inch mounting foot, Multi-groove serpentine pulley included. Features: All alternators are engineered for performance and reliability All alternators are engineered and manufactured with precision and quality All alternators must meet or exceed OEM performance before being boxed Warranty Information:When properly installed, all ARCO products are warrantied against defects in materials and workmanship for 12 months for leisure use and 90 days for commercial or racing applications. Add an extra year of warranty to your rotating electric ARCO product (Tilt/Trim Motors, Alternators, Outboard Starters, and Inboard Starters) when you register your product within 30 days of purchase. You can register your product by visiting arcomarine.com/product-registration Replaces: MERCURY Alternator 807653T SIERRA Alternator 18-5960 This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Quick Guide (pdf)

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Premium Replacement Alternator with 65mm Multi-Groove Pulley - 12V 70AReplacement alternator that will fit Mercruiser 4.3L - 8.2L, 1998-Up, 12 Volt, 70 AMP, Internal Fan, 65-mm multi-groove serpentine pulley included.Features: All alternators are engineered for performance and reliability All alternators are engineered and manufactured with precision and quality All alternators must meet or exceed OEM performance before being boxed Warranty Information:When properly installed, all ARCO products are warrantied against defects in materials and workmanship for a period of 12 months for leisure use and 90 days for commercial or racing applications. Add an extra year of warranty to your rotating electric ARCO product (Tilt/Trim Motors, Alternators, Outboard Starters, and Inboard Starters) when you register your product within 30 days of purchase. You can register your product by visiting arcomarine.com/product-registration Replaces:DELCO Alternator 19020601DELCO Alternator 19020609MERCURY Alternator 862031TMERCURY Alternator 862031T1Sierra Alternator 18-6293Protorque Alternator PH300-0034Protorque Alternator PH300-0035MPPARTS Alternator ADR0299MPPARTS Alternator ADR0316This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Amperage: 70A Voltage: 12v Box Dimensions: 7"H x 8"W x 8"L WT: 7.6 lbs UPC: 693006008172 Quick Guide (pdf)

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Kit 621 Series 100A Single FT Alt MC Reg T SensorKit Includes: 621-100-SV Alternator, MC-618 Regulator, Temperature Sensors, Mounting Hardware621-100-SV Alternator: 100A, 12V, Spindle Mount (Single Foot), 1-2in, Single Deep Vee Pulley, Isolated Ground1" Motorola-Style Mounting;  Typical for Westerbeke, Lehman, Hino & Pathfinder Engines2" Delco-Style Mounting;  Typical for Volvo Penta (Gas & Diesel), John Deere, Perkins, Mercruiser, Pleasurecraft, Crusader, Indmar, Marine Power & other GM-based EnginesReplaces:621-VUP-MC-100-SR-KITThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Amperage: 100A Voltage: 12v Box Dimensions: 10"H x 11"W x 14"L WT: 16.2 lbs UPC: 676205000543 Brochure (pdf)

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Zeus 24V 7kW 3.15 Alternator with Isolated GroundThe ARCO Zeus 24v 7kW alternator generates extremely high amperage at cruising and higher RPMs. This alternator continuously generates over 3kW (109 Amps) at just under 3,000 alternator RPM and almost 6kW (218 Amps) at under 6,000 RPM. In real-world terms, a marine diesel engine at 1,500 RPM with a 2:1 pulley ratio generates over 3kW, and a Mercedes Sprinter at 1,800 RPM with a 3.21:1 ratio generates over 6kW!The ARCO Zeus 24v 7kW alternator turns on for cruising or at mid to higher RPMs, runs cooler, and provides more power than older designs that are larger and heavier. The newest generation of 24V performance has arrived.Competitor’s 24V alternators utilize a 12V rotor and field current which is less efficient and limits output at all RPMs. ARCO utilizes a native 24V rotor and field current. This results in our 24V alternator running cooler than competitor’s 24V alternators, having a direct impact on the alternator lifespan.Features: Engineered for high energy production. Suitable for marine, RV, military, and commercial applications. Rapidly charges large battery banks. Coolest operating temperatures for increased performance: Heat shedding coatings Rectifier located on housing exterior Dual cooling fans OEM components Optimized for performance at idle speeds. Reduces the need for a generator by creating additional power with your engine. Unleash peak performance with E-Coat/Cerakote, keeping the high amp alternator cooler for sustained amperage output. Use the ARCO Zeus Bluetooth Alternator Regulator for maximum performance or lithium battery charging. SAE J1171 Certified. Proudly made in the U.S.A. Technical Specifications: Voltage - 24v Field Type - P Rotor Poles - 16 Stator Size - 138mm Frame Size - Large Weight - 15.89lbs/7.2kg Regulation - External Only Finish - (Black) E-coating Cut-In RPM - 1,962 Alternator RPM Maximum Alt RPM - 19,000 Battery Post - M8 Thread Post, Side Mount Standard Pulley - 49K6 (6-groove, 49mm) Pulley Mount - 17mm diameter shaft, 25mm long, threaded M17 x 1.5 Pulley Hardware - M17 x 1.5 x 24mm nut, w/ 18mm ID x 29mm OD washer (Included) Diodes - 6 positive, 6 negative, 80A Rated, Avalanche Max Output (Cold, 9,000 RPM) at 27.5v - 284 Amps - 7,810 Watts – 11.2 kW PTO Sustained Cruising Output (Hot, 6,000 RPM) at 27.5v - 220 Amps - 6,050 Watts – 8.6kW PTO Sustained Idle Output (Hot, 3,000 RPM) at 27.5v - 50 Amps 1,375 Watts – 2kW PTO Max Continuous Operating Temperature - 100°C / 212°F Mounting Application:Replaces most small case styles using a 3.15” J180 saddle style mount (e.g., Hitachi, Lucas, Mitsubishi) Most Yanmars. Quick Guide (pdf)Brochure (pdf)

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Premium Replacement Outboard Alternator with Multi-Groove Pulley - 12V 50AReplacement alternator that will fit 1.5L & 3.0L Mercury Outboard, 12 Volt, 50 AMP, Internal Fan, Multi-groove serpentine pulley included, Includes wire/plug connector.Features: All alternators are engineered for performance and reliability All alternators are engineered and manufactured with precision and quality All alternators must meet or exceed OEM performance before being boxed Warranty Information:When properly installed, all ARCO products are warrantied against defects in materials and workmanship for a period of 12 months for leisure use and 90 days for commercial or racing applications. Add an extra year of warranty to your rotating electric ARCO product (Tilt/Trim Motors, Alternators, Outboard Starters, and Inboard Starters) when you register your product within 30 days of purchase. You can register your product by visiting arcomarine.com/product-registration Replaces:DELCO Alternator 8600514DELCO Alternator 19020704DELCO Alternator 19020707MERCURY Alternator 8M0064020MERCURY Alternator 8M6000803MERCURY Alternator 828506MERCURY Alternator 875286A-1MERCURY Alternator 881247A1MERCURY Alternator 889956SIERRA Alternator 18-6455PROTORQUE Alternator PH300-0031PROTORQUE Alternator PH200-T010PROTORQUE Alternator PH200-T015PROTORQUE Alternator PH200-T016MPPARTS Alternator TRM0009MPPARTS Alternator TRM0066This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Amperage: 50A Voltage: 12v Box Dimensions: 8"H x 8"W x 9"L WT: 7.3 lbs UPC: 693006008219 Quick Guide (pdf)

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Pulley Kit for Yanmar 3JH2-TE, 3JH2-EAltMount® Serpentine Pulley Conversion Kit for Yanmar Diesel EnginesYanmar Engines Covered: 3JH2-TE, 3JH2-EKit Includes: Three Ten-Groove (J10) Pulleys, Two J10, 45″ Circumference Serpentine Belts (one spare) & Mounting HardwareNote:  If you specify an AT-200A Alternator, a longer belt length may be required.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

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Zeus A8000-48V 8kW Ford Transit Alternator with Isolated Ground & K6 PulleyARCO Zeus 48V Advantage. Better Technology = Better Performance. High Output/High Amperage Alternator: The Highest Power Output in Its Class.A8000-48V AdvantageThe ARCO Zeus A8000-48V alternator turns on at lower RPMs, runs cooler, and provides more power than other 48V alternators that are larger and heavier. This alternator continuously generates over 3kW (55 Amps) at 2,500 RPM and almost 6kW (111 Amps) at 4,000 RPM. Put in real-world terms, a marine diesel engine charging at 1,200 RPM with a 3.13:1 pulley ratio is generating just over 5kW (97 Amps), and a Mercedes Sprinter at 750 RPM with a 3.21:1 ratio is generating over 3kW (55 Amps)!True 24V AlternatorsInstead of using rotors designed for 48 volts, many competitor’s alternators simply use their 12V rotors, which are less efficient and limit output at all RPMs. In this scenario, your external smart regulator must drastically reduce the field by as much as 78%. If this is not done correctly, you run the risk of destroying the unit and damaging other components in your system. ARCO utilizes a native 48V rotor and field current. This results in our 48V alternator running cooler than competitors’ 48V alternators, having a direct impact on the alternator’s lifespan.Features: Replace your noisy generator! Engineered for high energy production. Suitable for marine, RV, military, and commercial applications. Rapidly charges large battery banks. Coolest operating temperatures for increased performance: Heat-shedding coatings Rectifier located on housing exterior Dual cooling fans OEM components Optimized for performance at idle speeds. Reduces the need for a generator by creating additional power with your engine. Unleash peak performance with E-Coat, keeping the high amp alternator cooler for sustained amperage output. For maximum performance or lithium battery charging, use the ARCO Zeus Bluetooth Alternator Regulator. Technical Specifications: Voltage - 48V Field Type - P Rotor Poles - 16 Stator Size - 138mm Frame Size - Large Weight - 15.89lbs/7.2kg Regulation - External Only (EX) Finish - (Black) E-coating Cut-In RPM - 1,920 Alternator RPM Maximum Alt RPM - 19,000 Battery Post - M8 Thread Post, Side Mount Standard Pulley - 49K6 (6-groove, 49mm) Pulley Mount - 17mm diameter shaft, 25mm long, threaded M17 x 1.5 Pulley Hardware - M17 x 1.5 x 24mm nut, w/ 18mm ID x 29mm OD washer (Included) Diodes - 6 positive, 6 negative, 80A Rated, Avalanche Max Output (Cold, 9,000 RPM) at 53.5v - 180 Amps - 9,360 Watts – 14.8 kW PTO Sustained Cruising Output (Hot, 6,000 RPM) at 53.5v - 138 Amps - 7,383 Watts – 10.5 kW PTO Sustained Idle Output (Hot, 2,500 RPM) at 53.5v - 78 Amps 4,173 Watts – 6kW PTO Max Continuous Operating Temperature - 100°C / 212°F

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Zeus A220/3000W 12V HD High Output Alternator - J180 MountARCO Zeus Heavy Duty Alternator is engineered for maximum output and extended-duty performance in demanding marine and diesel applications. Delivering the highest power output in its class, this high-amperage alternator is built to rapidly charge large battery banks and support high electrical loads with confidence.Zeus Heavy Duty operates at exceptionally cool temperatures thanks to dual internal cooling fans, ensuring sustained performance, extended service life, and reliable power production over long run times. Its high-energy output reduces reliance on onboard generators by producing more usable power directly from your engine.Features: Replace your noisy generator Designed for Extended Duty Operation Engineered for high energy production Rapidly charges large battery banks Coolest operating temperatures for increased performance, with dual internal fans Reduces the need for a generator by creating additional power with your engine External Regulation Required SAE J1171 Certified Regulation:External Only (EX): These units will come with a terminal block and a P-Type harness. They will only work with an external regulator, such as an ARCO Zeus Bluetooth alternator regulator.Specifications: Voltage: 12V Field Type: P Rotor Poles: 12 Weight: 18.7 lb (8.5 kg) Regulation: External Only (EX) Cut-In RPM: 1,288 Maximum Alt RPM: 10,000 Rear Battery Post: M8 Thread Standard Pulley: K8 59 mm Shaft Diameter: 7/8 in (22.22 mm) Avalanche Diodes: 50 amps Max Output (Cold): 249 amps Sustained Cruising Output (Hot, 6,000 RPM): 228 Amps Sustained Idle Output (Hot, 3,000 RPM): 200 amps Max Continuous Operating Temperature: 125°C Brochure (pdf)

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Zeus A220/3000W 12V HD High Output Alternator - Pad MountARCO Zeus Heavy Duty Alternator is engineered for maximum output and extended-duty performance in demanding marine and diesel applications. Delivering the highest power output in its class, this high-amperage alternator is built to rapidly charge large battery banks and support high electrical loads with confidence.Zeus Heavy Duty operates at exceptionally cool temperatures thanks to dual internal cooling fans, ensuring sustained performance, extended service life, and reliable power production over long run times. Its high-energy output reduces reliance on onboard generators by producing more usable power directly from your engine.Features: Replace your noisy generator Designed for Extended Duty Operation Engineered for high energy production Rapidly charges large battery banks Coolest operating temperatures for increased performance, with dual internal fans Reduces the need for a generator by creating additional power with your engine External Regulation Required SAE J1171 Certified Regulation:External Only (EX): These units will come with a terminal block and a P-Type harness. They will only work with an external regulator, such as an ARCO Zeus Bluetooth alternator regulator.Specifications: Voltage: 12V Field Type: P Rotor Poles: 12 Weight: 18.7 lb (8.5 kg) Regulation: External Only (EX) Cut-In RPM: 1,288 Maximum Alt RPM: 10,000 Rear Battery Post: M8 Thread Standard Pulley: K8 59 mm Shaft Diameter: 7/8 in (22.22 mm) Avalanche Diodes: 50 amps Max Output (Cold): 249 amps Sustained Cruising Output (Hot, 6,000 RPM): 228 Amps Sustained Idle Output (Hot, 3,000 RPM): 200 amps Max Continuous Operating Temperature: 125°C Brochure (pdf)

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Zeus A115/3500W 24V HD Hight Output Alternator - J180 MountARCO Zeus Heavy Duty Alternator is engineered for maximum output and extended-duty performance in demanding marine and diesel applications. Delivering the highest power output in its class, this high-amperage alternator is built to rapidly charge large battery banks and support high electrical loads with confidence.Zeus Heavy Duty operates at exceptionally cool temperatures thanks to dual internal cooling fans, ensuring sustained performance, extended service life, and reliable power production over long run times. Its high-energy output reduces reliance on onboard generators by producing more usable power directly from your engine.Features: Replace your noisy generator! Suitable for most diesel applications Designed for extended duty operation Engineered for high energy production Rapidly charges large battery banks. Coolest operating temperatures for increased performance, with dual internal fans Reduces the need for a generator by creating additional power with your engine. External Regulation Required Regulation:External Only (EX): These units will come with a terminal block and a P-Type harness. They will only work with an external regulator, such as an ARCO Zeus Bluetooth alternator regulator.Specifications: Voltage: 24V Field Type: P Rotor Poles: 12 Weight: 18.7 lb (8.5 kg) Regulation: External Only (EX) Cut-In RPM: 1,288 Maximum Alt RPM: 10,000 Rear Battery Post: M8 Thread Standard Pulley: K8 59 mm Shaft Diameter: 7/8 in (22.22 mm) Avalanche Diodes: 50 amps Max Output (Cold): 132 amps Sustained Cruising Output (Hot, 6,000 RPM): 104 Amps Sustained Idle Output (Hot, 3,000 RPM): 89 amps Max Continuous Operating Temperature: 125°C Brochure (pdf)

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Zeus A115/3500W 24V HD High Output Alternator - Pad MountARCO Zeus Heavy Duty Alternator is engineered for maximum output and extended-duty performance in demanding marine and diesel applications. Delivering the highest power output in its class, this high-amperage alternator is built to rapidly charge large battery banks and support high electrical loads with confidence.Zeus Heavy Duty operates at exceptionally cool temperatures thanks to dual internal cooling fans, ensuring sustained performance, extended service life, and reliable power production over long run times. Its high-energy output reduces reliance on onboard generators by producing more usable power directly from your engine.Features: Replace your noisy generator! Suitable for most diesel applications Designed for extended duty operation Engineered for high energy production Rapidly charges large battery banks. Coolest operating temperatures for increased performance, with dual internal fans Reduces the need for a generator by creating additional power with your engine. External Regulation Required Regulation:External Only (EX): These units will come with a terminal block and a P-Type harness. They will only work with an external regulator, such as an ARCO Zeus Bluetooth alternator regulator.Specifications: Voltage: 24V Field Type: P Rotor Poles: 12 Weight: 18.7 lb (8.5 kg) Regulation: External Only (EX) Cut-In RPM: 1,288 Maximum Alt RPM: 10,000 Rear Battery Post: M8 Thread Standard Pulley: K8 59 mm Shaft Diameter: 7/8 in (22.22 mm) Avalanche Diodes: 50 amps Max Output (Cold): 132 amps Sustained Cruising Output (Hot, 6,000 RPM): 104 Amps Sustained Idle Output (Hot, 3,000 RPM): 89 amps Max Continuous Operating Temperature: 125°C Brochure (pdf)

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Zeus A8000-48V 8kW 3.15 Alternator with Isolated Ground (Common Rail)The ARCO Zeus A8000-48V alternator turns on at lower RPMs, runs cooler, and provides more power than other 48V alternators that are larger and heavier. This alternator continuously generates over 3kW (55 Amps) at 2,500 RPM and almost 6kW (111 Amps) at 4,000 Alternator RPM. Put in real-world terms, a marine diesel engine charging at 1,200 RPM with a 3.13:1 pulley ratio is generating just over 5kW (97 Amps), and a Mercedes Sprinter at 750 RPM with a 3.21:1 ratio is generating over 3kW (55 Amps)!Instead of using rotors designed for 48 volts, many competitor alternators simply use their 12V rotors which is less efficient and limits output at all RPMs. In this scenario, your external smart regulator must drastically reduce field, by as much as 78%. If this is not done correctly, you run the risk of destroying the unit and damaging other components in your system. ARCO utilizes a native 48V rotor and field current. This results in our 48V alternator running cooler than competitor’s 48V alternators, having a direct impact on the alternator’s lifespan.Features: Engineered for high energy production. Suitable for marine, RV, military, and commercial applications. Rapidly charges large battery banks. Coolest operating temperatures for increased performance: Heat shedding coatings Rectifier located on housing exterior Dual cooling fans OEM components Optimized for performance at idle speeds. Reduces the need for a generator by creating additional power with your engine. Unleash peak performance with E-Coat/Cerakote, keeping the high amp alternator cooler for sustained amperage output. Use the ARCO Zeus Bluetooth Alternator Regulator for maximum performance or lithium battery charging. SAE J1171 Certified. Proudly made in the U.S.A. Technical Specifications: Voltage - 48v Field Type - P Rotor Poles - 16 Stator Size - 138mm Frame Size - Large Weight - 15.89lbs/7.2kg Regulation - External Only Finish - (Black) E-coating Cut-In RPM - 1,920 Alternator RPM Maximum Alt RPM - 19,000 Battery Post - M8 Thread Post, Side Mount Standard Pulley - 49K6 (6-groove, 49mm) Pulley Mount - 17mm diameter shaft, 25mm long, threaded M17 x 1.5 Pulley Hardware - M17 x 1.5 x 24mm nut, w/ 18mm ID x 29mm OD washer (Included) Diodes - 6 positive, 6 negative, 80A Rated, Avalanche Max Output (Cold, 9,000 RPM) at 53.5v - 180 Amps - 9,360 Watts – 14.8 kW PTO Sustained Cruising Output (Hot, 6,000 RPM) at 53.5v - 138 Amps - 7,383 Watts – 10.5 kW PTO Sustained Idle Output (Hot, 2,500 RPM) at 53.5v - 78 Amps 4,173 Watts – 6kW PTO Max Continuous Operating Temperature - 100°C / 212°F Mounting Application:Must Be Used on Yanmar Common Rail Engines Introduced after 2013 (JH-CR, 3JH40, 4JH45, 4JH57, 4JH80, 4JH110). Quick Guide (pdf)Brochure (pdf)

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