Alternator 250 AMP Kit 12V 3.15" Dual Foot Saddle J10 Pulley Regulator & Temp SensorKit Includes: XT-DF-250-J10 Alternator, MC-618 Regulator, Temperature Sensors & Mounting HardwareXT Series Alternator: 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-MC-200-KIT, AT-DF-200-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: 250A
Voltage: 12v
Box Dimensions: 11"H x 11"W x 14"L WT: 21 lbs
UPC: 676205502276
Brochure (pdf)
Alternator 250 AMP 12V 3.15" Dual Foot Saddle K6 PulleyAlternator, XT Series, 250A, 12V, Saddle Mount (Dual Foot), 3.15in, K6 Serpentine Pulley, Case GroundHitachi-Style Mounting; Typical for Yanmar, Westerbeke, Lehman & Perkins-Sabre EnginesReplaces: AT-DF-200-12-IG, AT-DF-200-K6This 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 lbs
UPC: 676205502283
Brochure (pdf)
Alternator 120 AMP 12V 4" Dual Foot Saddle K6 Pulley with Isolated GroundAlternator, 604 Series, 120A, 12V, Saddle Mount (Dual Foot), 4in, K6 Serpentine Pulley, Isolated Ground 4" J-180-Style Mounting; Typical for Caterpillar, Cummins, Detroit Diesel & John Deere EnginesReplaces: 604-120-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 9"W x 10"L WT: 13.35 lbs
UPC: 676205750615
Brochure (pdf)
Premium Replacement Inboard Alternator with Single Groove Pulley - 12V 55AReplacement alternator that will fit O.M.C. Cobra., Prestolite/Motorola, 12 Volt, 55 Amp, Internal regulator, Negative ground, 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:BRP-OMC Alternator 983424BRP-OMC Alternator 984565BRP-OMC Alternator 985465BRP-OMC Alternator 985466BRP-OMC Alternator 986008BRP-OMC Alternator 988247BRP-OMC Alternator 3853853BRP-OMC Alternator 3854182BRP-OMC Alternator 3854809BRP-OMC Alternator 3857298BRP-OMC Alternator 3860769VOLVO Alternator 3850927-9VOLVO Alternator 3853853-4VOLVO Alternator 3854182-7VOLVO Alternator 3854809-5VOLVO Alternator 3857298VOLVO Alternator 3860173VOLVO Alternator 857298SIERRA Alternator 18-6260SIERRA Alternator 18-6842This 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: 11.2 lbs
UPC: 693006001395
Quick Guide (pdf)
Universal Adjustment Arm - OffsetUniversal Adjustment Arm for the Belt Buddy with a 1/2″ offset for certain mounting applications which require an offset. 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 UAA2 is part number BB, grouped together the set is part number UBB2. The Belt Buddy Mechanism which goes with most any adjustment arm is part number BBU.The UAA2 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.
Zeus A225S J-180 3.15" Alternator with Terminal BlockThe highest power output alternator in its size/class. 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. Runs 8 - 20% cooler than incumbent alternators due to:
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. Our advanced coating absorbs less heat, keeping the A225S cooler. This translates to more amperage for sustained periods.
For maximum performance or lithium battery charging, use an ARCO Zeus Bluetooth alternator regulator.
SAE J1171 Certified.
Proudly made in the U.S.A.
Technical Specifications:
Voltage - 12v
Field Type - P
Rotor Poles - 16
Stator Size - 130mm
Frame Size - Small
Weight - 12lbs/6.7kg
Regulation - External Only
Output Voltage - 14.1v (default)
Finish - (Black) Cerakote or E-coating
Cut-In RPM - 1,061 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, 50A Rated, Avalanche
Max Output (Cold, 9,000 RPM) - 254 Amps
Sustained Cruising Output (Hot, 6,000 RPM) - 187 Amps
Sustained Idle Output (Hot, 3,000 RPM) - 157 Amps
Mounting Application:Replaces most small case styles using a 3.15” J180 saddle style mount (e.g., Hitachi, Lucas, Mitsubishi) Most Yanmars.
Replacement Alternator for Mercury Engines - 75-115 HPReplacement alternator that will fit Mercury Outboard Engines 75 HP - 115 HP, 12 Volt, 50 AMP, internal fan, 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 8M0063970
MERCURY Alternator 897755T
EMP Alternator 4-6840
This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.
Zeus A275L Transit Alternator with Terminal BlockHigh Output / High Amperage Alternator: The Highest Power Output in Its Class.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/Cerakote, keeping the A275L cooler for sustained amperage output
For maximum performance or lithium battery charging, use the ARCO Zeus Bluetooth Alternator Regulator
Mercedes requires the use of a clutch pulley on secondary alternators used on all Sprinter vans. For Mercedes Sprinter, please use our N62 with Clutch Pulley here
SAE J1171 Certified
Models are available with internal/external voltage regulators
Proudly made in the U.S.A.
Specifications:
Voltage: 12V
Field Type: P
Rotor Poles: 16
Stator Size: 138mm
Frame Size: Large
Weight: 14.9 lbs / 6.7 kg
Regulation: Internal/External (IE) or External Only (EX)
Output Voltage: 14.1V (default)
Finish: (Black) Cerakote or E-coating
Cut-In RPM: 1,061 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, 50A Rated, Avalanche
Max Output (Cold, 9,000 RPM): 311 Amps
Sustained Cruising Output (Hot, 6,000 RPM): 227 Amps
Sustained Idle Output (Hot, 3,000 RPM): 198 Amps
Max Continuous Operating Temperature: 110°C / 230°F
Mounting Application:Replaces Ford Transit alternators for 3.5L & 3.7L Gas engines 2015-2022
Pulley Kit for Perkins 4170, 4108 (K6)AltMount®Serpentine Pulley Conversion Kit for Perkins/Sabre EnginesPerkins/Sabre Engines Covered: 4107, 4108Kit Includes: Three Six-Groove (K6) Pulleys, Two K6, 40″ 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.
Zeus A8000-48V 8kW J180 4" Alternator with Isolated GroundThe 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:Replaces most Volvo Penta alternators using a 4” J180 saddle-style mount. Also, used on many larger industrial-based engines. Quick Guide (pdf)Brochure (pdf)
Pulley Kit for Yanmar 6LY, 6LYA-STP, 6LY2-STPAltMount® Serpentine Pulley Conversion Kit for Yanmar Diesel EnginesYanmar Engines Covered: 6LY, 6LYA-STP, 6LY2-STPKit Includes: Three Ten-Groove (J10) Pulleys, Two J10, 55″ 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.
95 Series Alternator Pully, Altmount®AltMount® Serpentine PulleyTen-Groove (J10) Serpentine Pulley for 95-Series Alternators2.7″ Diameter, 0.875″ BoreThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.