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High performance alternator for marine and commercial applications.
The ARCO A275L Series Alternator 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 external regulator and 6-groove pulley system ensure efficient operation, while the black Cerakote finish enhances durability and cooling efficiency.
This alternator features a large frame and a saddle style mount, providing a reliable fit for various installations. The 17 millimeter diameter shaft pulley mount and M8 thread side mount battery post facilitate easy integration into existing systems. The ARCO A275L is SAE J1171 certified, ensuring compliance with industry standards for safety and performance.
With nearly 60 years of experience, ARCO is committed to delivering dependable starting and charging products. Each unit is rigorously tested beyond normal operating conditions to ensure reliability and longevity. The A275L Series Alternator exemplifies ARCO's dedication to quality and performance in demanding environments.
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, Keeping The A275L Cooler For Sustained Amperage Output
- SAE J1171 Certified
- Made In USA
Specifications
- Manufacturer: Arco Marine
- Manufacturer Part Number: 4019
- Condition: New
- Amperage Output: 311 Amp
- Voltage: 12 Volt
- Case Style: OEM
- Includes Pulley: Yes
- Pulley Type: 6 Groove
- Includes Regulator: No
- Regulator Type: External
- Finish: Electro Coated
- Includes Brackets: No
Technical Documents
- TECH-004_ARCO_Zeus_Installation_Audit_v1.0.pdf
- TECH-001_ARCO_Zeus_Alternator_Installation_Guide_2025.pdf
- TECH-002_ARCO_Zeus_Alternator_Regulator_OEM_Troubleshooting_Guide.pdf
- TECH-003_ARCO_Zeus_Bluetooth_Regulator_Settings_Manual_v1.1.pdf
- TECH-005_ARCO_Zeus_Installation_Instructions_Mercedes_Sprinter_2.0L.pdf
- TECH-006_ARCO_Zeus_Installation_Inst._Ford_TR_3.5L_EcoBoost_REV_D.pdf
- ARCO_Zeus_High_Output_Alternator_Testing.pdf
- The_ARCO_Zeus_Collection_Brochure.pdf
- The_ARCO_Zeus_Collection_Brochure.pdf
- The_ARCO_Zeus_Collection_Brochure.pdf
Product Videos
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.
