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. Its advanced E-Coat and Cerakote finishes help reduce operating temperatures, allowing for sustained peak performance and increased amperage output.
This alternator features a 6-groove 49 millimeter K6 belt and operates at 12 volts, ensuring compatibility with a wide range of systems. The external regulator and 2-wire configuration provide flexibility in installation, while the large frame and M8 thread side mount battery post enhance durability and ease of use. The ARCO A275L is SAE J1171 certified, ensuring compliance with industry standards for safety and reliability.
With nearly 60 years of experience, ARCO is a trusted source for OEM quality alternators and starters. Each unit is rigorously tested beyond normal operating conditions to ensure dependability and performance. The A275L Series is a testament to ARCO's commitment to providing high-quality starting and charging solutions for demanding applications.
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: 4027
- 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
- The_ARCO_Zeus_Collection_Brochure.pdf
- ARCO_Zeus_Alternator_Wiring_Guide_2025.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.
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