Zeus A275L J-180 4 Alternator with Terminal Block
The 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.
- It runs 8 - 20% cooler than incumbent alternators due to heat-shedding coatings, a refrigerator on the housing exterior, dual cooling fans, and OEM components.
- It is 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 A275L cooler. This translates to more amperage for sustained periods.
- Use an ARCO Zeus Bluetooth alternator regulator or lithium battery charging for maximum performance.
- SAE J1171 Certified.
- 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 - External Only (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.)
- 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 - 110C / 230F
Mounting Application:
- Replaces most Volvo Penta alternators using a 4 J180 saddle-style mount
The ARCO Marine Zeus A275L J-180 4-Inch Alternator is designed for high energy output in demanding marine, RV, military, and commercial applications. Engineered to rapidly charge large battery banks, this alternator ensures reliable power supply even under heavy loads. Its robust construction and advanced cooling features allow it to operate 8 to 20% cooler than traditional alternators, thanks to heat-shedding coatings, dual cooling fans, and high-quality OEM components. This cooling efficiency translates into increased performance and longevity, especially during extended use at higher outputs. The A275L is optimized for performance at idle speeds, making it an ideal solution for engines where space and weight are critical considerations.
Equipped with E-Coat/Cerakote technology, the alternator absorbs less heat and maintains cooler operating temperatures, enabling it to deliver higher amperage over prolonged periods. Its compatibility with ARCO Zeus Bluetooth alternator regulators or lithium battery charging systems offers maximum flexibility and performance tuning. Certified under SAE J1171 standards and proudly made in the USA, this alternator is built to meet stringent quality and reliability standards. It features a 12-volt system, a rotor with 16 poles, and a large frame size, providing substantial power output while maintaining a compact form factor. The alternator's external regulation setup comes with a terminal block and P-Type harness for easy installation and integration with external regulators.
With a maximum cold RPM of 9,000, it can deliver up to 311 amps, while maintaining high sustained outputs at hot operating temperatures. Its durable design includes a M8 side mount battery post, a standard 49mm multi-groove pulley, and high-rated avalanche diodes for reliable operation. The alternator replaces most Volvo Penta models with a 4 J180 saddle-style mount, making it a versatile choice for various marine and industrial applications. Its lightweight design and efficient cooling system ensure optimal performance without excessive heat buildup, making the ARCO Marine Zeus A275L J-180 4-Inch Alternator a dependable power solution for demanding environments.
Features:
- Engineered for High Energy Production: Ensures maximum power output in compact size.
- Suitable for Marine, RV, Military, and Commercial Applications: Versatile for various demanding environments.
- Rapidly Charges Large Battery Banks: Keeps batteries charged quickly and efficiently.
- Cool Operating Temperatures: Operates 8-20% cooler due to heat-shedding coatings and dual cooling fans.
- Optimized for Idle Performance: Maintains high output even at low engine RPMs.
- Advanced Coating Technology: E-Coat/Cerakote absorbs less heat for sustained amperage.
- External Regulation Compatible: Designed for use with ARCO Zeus Bluetooth regulators or lithium charging systems.
- SAE J1171 Certified: Meets industry standards for durability and safety.
- Made in the USA: Built with high-quality components for reliability and longevity.
