ARCO Marine Zeus A275L N62 Alternator with Terminal Block for Marine, RV, and Commercial Applications

Zeus A275L N62 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. Runs 8 - 20% cooler than incumbent alternators due to:

- Heat shedding coatings

- Rectifier located on housing exterior

- Dual cooling fans

- 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 for maximum performance or lithium battery charging.


• 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 Mercedes and BMW alternators, Mercedes Sprinter 1999-2006 alternators, Mercedes Sprinter Factory dual alternator 2007-Up Replacement

The ARCO Marine Zeus A275L N62 Alternator is engineered for high energy production, delivering the highest power output within its size and class. Designed to meet demanding marine, RV, military, and commercial needs, this alternator rapidly charges large battery banks and ensures reliable performance across various operating conditions. Its advanced construction includes heat shedding coatings, exterior-mounted rectifiers, dual cooling fans, and OEM components, all contributing to the coolest operating temperatures—running 8 to 20% cooler than traditional alternators. This enhanced cooling capability enables sustained high amperage output, making it ideal for applications requiring consistent power delivery.
The A275L is optimized for performance at idle speeds, reducing reliance on a generator by generating additional power directly from your engine. Its robust design incorporates an E-Coat/Cerakote finish, which absorbs less heat compared to standard coatings, further enhancing thermal management and allowing for more sustained amperage. For maximum performance, pairing this alternator with an ARCO Zeus Bluetooth regulator or lithium battery systems is recommended. Certified to SAE J1171 standards and proudly manufactured in the USA, this alternator ensures quality and durability.
Technical features include a 12-volt system with a rotor featuring 16 poles and a stator size of 138mm. It features an M8 threaded side mount battery post, a large frame size, and a weight of approximately 15 pounds. The unit's regulation is external-only, supplied with a terminal block and P-type harness for compatibility with external regulators. Its default output voltage is 14.1 volts, with a maximum RPM of 19,000 and a cut-in RPM of 1,061. The alternator's maximum cold output at 9,000 RPM is 311 amps, with a hot cruising output of 227 amps at 6,000 RPM, and an idle output of 198 amps at 3,000 RPM. Designed to replace most Mercedes and BMW alternators, it also fits Mercedes Sprinter models from 1999 through 2006, including factory dual alternator setups from 2007 onward, making it a versatile choice for a range of vehicles requiring high-capacity alternators.

Features:

• Engineered for high energy production, suitable for demanding marine, RV, military, and commercial applications

• Rapidly charges large battery banks to support heavy power loads

• Runs 8-20% cooler than traditional alternators due to heat shedding coatings, exterior rectifier placement, dual cooling fans, and OEM components

• Optimized for idle performance, reducing the need for a generator

• Advanced E-Coat/Cerakote finish absorbs less heat, enabling sustained high amperage output

• Compatible with ARCO Zeus Bluetooth alternator regulator and lithium batteries for enhanced performance

• SAE J1171 Certified, manufactured in the USA, ensuring quality and durability

• s a 12-volt system with 16 rotor poles, 138mm stator, and external regulation capability