• ARCO Marine Zeus A275L J-180 Alternator, 12V 311A, SAE J1171 Certified
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Brand: ARCO Marine

ARCO Marine Zeus A275L J-180 4 in. Alternator with Regulator

ARCO Marine Zeus A275L J-180 4 in. Alternator with Regulator

$1,160.14
$1,160.14
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The ARCO Marine Zeus A275L J-180 4 in. alternator with regulator is engineered for high-energy production across marine, RV, military, and commercial applications. This unit is designed to charge large battery banks efficiently, even at idle speeds, and is built to operate 8–20% cooler than standard alternatives using heat-shedding coatings and dual cooling fans.

  • High Performance: Delivers up to 311 Amps at 9,000 RPM (cold) and sustained output of 198 Amps at idle (hot).
  • Compatibility: Features a J-180 4 in. saddle-style mount, designed to replace most Volvo Penta alternators.
  • Specifications: 12V system, 16 rotor poles, 138mm stator, and 14.9 lbs weight.
  • Regulation: Internal regulation with an adapter included for optional external regulation.
  • Durability: SAE J1171 certified and finished with black E-Coat/Cerakote for advanced heat management.
  • Pulley: Includes 49K6 6-groove pulley with M17 mounting hardware.
  • Origin: Made in the U.S.A.

Technical Data: Max continuous operating temperature is 110°C (230°F), with a maximum alternator speed of 19,000 RPM and a cut-in speed of 1,061 RPM.

Product facts

CT SKU
CT-117894
UPC / GTIN
695845877032
Package weight
16.55 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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