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)
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)
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)
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)
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.
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
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)
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)
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)
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)
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)
Zeus A275L J180 4" Alternator with Isolated Ground & 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.
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.
Use the ARCO Zeus Bluetooth Alternator Regulator for maximum performance or lithium battery charging.
SAE J1171 Certified.
Models available with internal/external voltage regulator.
Proudly made in the U.S.A.
Technical 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 (Internally regulated with adaptor for optional external regulation.)
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 Applications:Replaces most Volvo Penta alternators using a 4” J180 saddle-style mount Quick Guide (pdf)Brochure (pdf)