The Arco Zeus A275L N62 is a high-output 275-amp marine alternator designed for demanding applications requiring substantial electrical power. Engineered for marine, RV, military, and commercial use, this alternator delivers exceptional performance while maintaining cooler operating temperatures than conventional alternators.
Advanced Cooling Technology:
The A275L runs 8-20% cooler than traditional alternators through multiple innovative features: heat-shedding E-Coat/Cerakote finish, exterior-mounted rectifier for better heat dissipation, dual cooling fans, and premium OEM components. This superior thermal management translates to sustained high-amperage output and extended service life.
Performance Features:
- Maximum output of 311 amps (cold, 9,000 RPM) - highest in its size class
- Sustained cruising output of 227 amps (hot, 6,000 RPM)
- Sustained idle output of 198 amps (hot, 3,000 RPM) - optimized for low-speed performance
- Rapidly charges large battery banks, reducing generator dependency
- Internal/external regulation capability with included adaptor
- Compatible with Arco Zeus Bluetooth regulator for lithium battery charging
- SAE J1171 certified
- Made in USA
Technical Specifications:
- Voltage: 12V output at 14.1V default
- Frame: Large frame with 138mm stator
- Field Type: P-type with 16 rotor poles
- Weight: 14.9 lbs (6.7 kg)
- RPM Range: 1,061 cut-in to 19,000 maximum alternator RPM
- Pulley: 49K6 (6-groove, 49mm) on 17mm diameter x 25mm shaft
- Mounting: M17 x 1.5 threaded shaft with included hardware
- Battery Connection: M8 threaded post, side mount
- Diodes: 12 total (6 positive, 6 negative), 50A rated avalanche type
- Max Operating Temperature: 230°F (110°C)
- Finish: Black Cerakote or E-coating
Application Notes:
Replaces most Mercedes and BMW alternators, including Mercedes Sprinter 1999-2006 single alternators and 2007-Up factory dual alternator installations.
Note: This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.
