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Best Seller Arco Marine Zeus High Output External Alternator A275l J-180 3.15" With Terminal Block - A275l-12-df315-ex-49k6 Upgraded Model [qIrVGPyN]

$74.99 $239.99 -69%

Upgrade your marine vessel's electrical system with the ARCO Marine A275L-12-DF315-EX-49K6 Zeus A275L J-180 Alternator, featuring a robust 3.15" terminal block. Engineered for exceptional reliability and efficiency, this alternator ensures your boat'

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Best Seller Arco Marine Zeus High Output External Alternator A275l J-180 3.15" With Terminal Block - A275l-12-df315-ex-49k6 Upgraded Model [qIrVGPyN]

Upgrade your marine vessel's electrical system with the ARCO Marine A275L-12-DF315-EX-49K6 Zeus A275L J-180 Alternator, featuring a robust 3.15" terminal block. Engineered for exceptional reliability and efficiency, this alternator ensures your boat's power supply remains steady and dependable even in demanding conditions.

Ideal for serious marine enthusiasts, the Zeus A275L combines cutting-edge technology with marine-grade durability to keep your adventures powered up and worry-free.

  • Engineered for High Energy Production.
  • Optimized for performance at idle speeds.
  • Rapidly charges large battery banks.
  • High-density, ultra-efficient stator winding produces maximum energy output.
  • Coolest operating temperatures for increased performance. Runs 8 - 20% cooler than incumbent alternators due to:
    •  Heat-shedding coatings
    •  Rectifier located on housing exterior
    • Dual cooling fans
    • OEM components
  • Unleash peak performance with E-Coat/ Cerakote. Our advanced coating dissipates heat, keeping the A275L cooler. This translates to more amperage for
    sustained periods.
  • For maximum performance or lithium battery charging, use an ARCO Zeus Alternator Regulator.
  • SAE J1171 Certified.

California Proposition 65: WARNING Cancer. www.P65Warnings.ca.gov

Specifications:

Voltage 12V
Field Type P
Rotor Poles 16
Stator Size 138mm
Regulation Internal/External (IE) or External Only (EX)
Output Voltage 14.1V (default)
Cut-In Alt. RPM 1,061
Maximum Alt RPM 19,000
Battery Post M8 Thread Post, Side Mount
Standard Pulley 49K6 (6-groove, 49mm); 50mm Clutch Pulley (Optional)
Pulley Mount 17mm diameter shaft, 25mm long, threaded M17 x 1.5
Pulley Hardware M17 x 1.5 x 24mm nut, w/ 18mm ID x 29mm OD washer (Included)
Diodes 6 positive, 6 negative, 50A Rated, Avalanche
Max Output (Cold, 9,000 RPM) 310 Amps
Sustained Cruising Output (Hot, 6,000 RPM) 235 Amps
Sustained Idle Output (Hot, 3,000 RPM) 198 Amps
Max Continuous Operating Temperature 110°C/230°F
Housing 3.15" J180
Dimensions (LxWxH) 6.8" x 8.5" x 5.6"

 

What Our Customers Say

January 29, 2026

Absolutely no complaints!

It's a very sleek and a highly capable device.

- Pascoe K..

January 29, 2026

Absolutely no complaints!

It's a very solid, and a very, very, very nice product.

- Bronwen G..

January 29, 2026

Absolutely no complaints!

The design is crisp, clean, and very smart.

- Barnaby B..

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