Brand: ARCO Marine
ARCO Marine Zeus A275L Vortec Alternator with Regulator, 12V 311A, 4034
ARCO Marine Zeus A275L Vortec Alternator with Regulator, 12V 311A, 4034
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The ARCO Marine Zeus A275L Vortec Alternator is a high-output charging solution designed to rapidly replenish large battery banks. Engineered for marine, RV, commercial, and military applications, this unit operates 8-20% cooler than standard alternators to deliver sustained high amperage, even at idle speeds.
Key Features:
- Output: 311 Amps (cold, 9,000 RPM), 227 Amps (sustained cruising), and 198 Amps (sustained idle).
- Advanced Thermal Management: Features heat-shedding Cerakote and E-coat finishes, a housing-mounted rectifier, and dual cooling fans.
- Compatibility: Replaces Mando-type alternators using Vortec/GM pad mounting feet, common on Mercruiser and Volvo Penta marine engines (3.0GLM, 3.0GLP, 4.3GXi, 5.7GiL, 5.7GXiL).
- Regulation: Internally regulated (14.1V default) with an adapter option for external regulation using an ARCO Zeus Bluetooth alternator regulator.
- Construction: SAE J1171 certified and made in the U.S.A.
- Frame/Mounting: Large frame size, M8 side-mount battery post, and 6-groove 49mm pulley.
- Weight: 14.9 lbs.
Product facts
- CT SKU
- CT-117905
- UPC / GTIN
- 695845806575
- Package weight
- 16.5 lb
Fit-sensitive item: confirm measurements, model numbers, and manufacturer details before ordering. Tug & Tow does not guarantee universal compatibility from a product page alone.
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Shipping & returns
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Fit & compatibility
Fit & compatibility
Review the product title, description, images, dimensions, part numbers, and manufacturer details before purchase. For fit-sensitive items, confirm compatibility with your boat, RV, trailer, vehicle, or equipment.
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