ARCO Marine Zeus A275L Vortec Alternator, 311A Max, 12V with Regulator

Experience superior power output and unwavering reliability with the ARCO Marine Zeus A275L Vortec Alternator. Engineered for demanding marine, RV, military, and commercial applications, this high-energy alternator boasts the highest power output in its class. It rapidly charges large battery banks and is optimized for exceptional performance even at idle speeds, reducing your reliance on a separate generator. Proudly made in the U.S.A. and SAE J1171 Certified for marine use, the Zeus A275L ensures long-term durability and peak performance. Upgrade your power system today for unmatched electrical generation.

• ARCO Marine Zeus A275L Vortec Alternator
• Internal/External Regulator
• Pulley Hardware (M17 x 1.5 x 24mm nut, w/ 18mm ID x 29mm OD washer)

• Highest Power Output: Delivers a maximum cold output of 311 Amps at 9,000 RPM, with sustained cruising output of 227 Amps (hot, 6,000 RPM) and 198 Amps at idle (hot, 3,000 RPM) to keep all your systems powered.
• Cooler Operation: Runs 8-20% cooler than traditional alternators thanks to heat-shedding E-Coat/Cerakote coatings, an exterior-mounted rectifier, dual cooling fans, and OEM components, ensuring increased longevity and sustained amperage.
• Optimized for Idle Performance: Maintains robust power generation even at low engine RPMs, ideal for extended idling periods.
• Durable Construction: Features a robust design with a black Cerakote or E-coating finish for enhanced protection in harsh environments.
• Made in the U.S.A.: Guarantees high-quality craftsmanship and reliable performance.
• SAE J1171 Certified: Meets stringent safety standards for marine ignition protection.

This alternator is a direct replacement for Mando-type alternators using Vortec/GM pad mounting feet. It is commonly found on many Mercruiser and Volvo Penta marine engines including 3.0GLM, 3.0GLP, 4.3GXi, 5.7GiL, and 5.7GXiL (GM Blocks). For maximum performance and optimized lithium battery charging, consider pairing with an ARCO Zeus Bluetooth alternator regulator.