High energy production for marine and commercial applications
The ARCO A275L Series Alternator Generator is engineered for high energy production, making it suitable for marine, RV, military, and commercial applications. With a robust output of 311 amps at 9000 RPM, this alternator is designed to rapidly charge large battery banks while maintaining optimal performance at idle speeds. The unit features a 6-groove 49 millimeter K6 belt and operates at 12 volts, ensuring reliable power delivery in demanding environments.
Constructed with advanced E-Coat and Cerakote finishes, the A275L Series minimizes heat absorption, allowing for cooler operation and increased performance. This alternator is SAE J1171 certified, ensuring compliance with industry standards for safety and reliability. The internal and external regulator design, along with a small frame and M8 thread side mount battery post, enhances installation flexibility and compatibility with various setups.
ARCO's commitment to quality is evident in their rigorous testing processes, which exceed normal operating conditions to guarantee dependability. With nearly 60 years of experience, ARCO continues to set the standard for OEM quality alternators and starters, providing unmatched technical support and customer service.
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
- Optimized For Performance At Idle Speeds
- Reduces Need For Generator By Creating Additional Power With Your Engine
- Unleash Peak Performance With E-Coat And Cerakote, Our Advanced Coating Absorbs Less Heat, Keeping The A225S Cooler, This Translates To More Amperage For Sustained Periods
- SAE J1171 Certified
- Made In USA
Specifications
- Manufacturer: Arco Marine
- Manufacturer Part Number: 4022
- Condition: New
- Amperage Output: 311 Amp
- Voltage: 12 Volt
- Case Style: OEM
- Includes Pulley: Yes
- Pulley Type: 6 Groove
- Wire Type: 2-Wire
- Includes Regulator: No
- Regulator Type: External
- Finish: Electro Coated
- Includes Belt: Yes
- Includes Brackets: No
Technical Documents
- ARCO_Zeus_Alternator_Wiring_Guide_2025.pdf
- ARCO_Zeus_Brand_Limited_Warranty.pdf
- ARCO_Zeus_High_Output_Alternator_Testing_Results_93023fc1-b11e-4181-9ad0-8b24e3e4ccca.pdf
- ARCO_Zeus_High_Output_Alternator_Testing_Results_93023fc1-b11e-4181-9ad0-8b24e3e4ccca.pdf
- ARCO_Zeus_High_Output_Alternator_Testing_Results_93023fc1-b11e-4181-9ad0-8b24e3e4ccca.pdf
- The_ARCO_Zeus_Collection_Brochure.pdf
- The_ARCO_Zeus_Collection_Brochure.pdf
- ARCO_Zeus_Alternator_Wiring_Guide_2025.pdf
- The_ARCO_Zeus_Collection_Brochure.pdf
Shipping & Returns
- This product ships within the continental USA only.
- This product typically ships within 1 to 3 business days.
- Returns are accepted within 30 days for items in like-new condition. For complete details, please see our return policy.
Skip to content

