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Arco Starting & Charging A275L-12-DF315-EX-49K6 Zeus 275A High Output Marine Alternator 12V

Manufacturer

Arco Starting & Charging

<h3>Nearly Six Decades of Marine Electrical Excellence</h3><p>ARCO Starting & Charging has been the trusted name in marine electrical components for nearly 60 years, setting the gold standard for OEM-quality replacement parts. Operating from their Florida facility, ARCO manufactures, tests, and warehouses every component in the USA, ensuring rigorous quality control before any part leaves their 100,000-square-foot production center. What sets ARCO apart from competitors is their commitment to testing every unit beyond normal operating conditions, using state-of-the-art computerized assembly lines and automated digital load testers to verify performance specifications.</p><p>The company's dedication to proven dependability has earned them a reputation among marine mechanics, boat owners, and commercial operators who demand reliability in challenging saltwater environments. ARCO products consistently meet or exceed OEM specifications, backed by their comprehensive warranty program that demonstrates confidence in their manufacturing processes. Their engineering team comprises industry veterans with decades of experience in rotating electrical components, providing technical expertise that translates into innovative product solutions.</p><h3>Comprehensive Marine Starting & Charging Solutions</h3><p>ARCO's product lineup addresses every aspect of marine electrical systems. Their <a href="/7236-arco-starting-charging-tilttrim-motors-201071">tilt/trim motors</a> deliver precise control for outboard and stern drive positioning, featuring corrosion-resistant construction and reliable performance in harsh marine conditions. The company's <a href="/7236-arco-starting-charging-starters-inboard-201008">inboard starters</a> and <a href="/7236-arco-starting-charging-starters-outboard-201009">outboard starters</a> utilize high-performance permanent magnet gear reduction technology, ensuring powerful cranking even in cold-start situations. Whether you're maintaining a fishing boat, pleasure craft, or commercial vessel, ARCO's extensive application catalog covers major engine manufacturers including Mercury, Yamaha, Volvo Penta, MerCruiser, and OMC.</p><p>Beyond their traditional marine engine components, ARCO has expanded into high-energy charging solutions through their Zeus product line, which includes high-output alternators in 12V, 24V, and 48V configurations, along with Bluetooth-enabled voltage regulators. This innovation addresses the growing electrical demands of modern boats equipped with electronics, navigation systems, and house battery banks. ARCO's commitment to manufacturing in America means faster availability, with over six months of inventory typically in stock, and direct technical support from the engineers who design and build their products.</p>

Part Number

A275L-12-DF315-EX-49K6
07/13/2036 1:25 PM
Sale Price

$939.58

In Stock (5)

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Usually delivered within 2 days

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Product Details

The Arco Zeus A275L J-180 High Output Alternator delivers the highest power output in its size class, engineered specifically for demanding marine, RV, military, and commercial applications. This 12-volt alternator produces up to 311 amps at maximum output, making it ideal for rapidly charging large battery banks without relying on a generator.

Advanced Cooling Technology:

  • Runs 8-20% cooler than comparable alternators through heat-shedding Cerakote/E-coat finish
  • Externally mounted rectifier dissipates heat away from internal components
  • Dual cooling fans maintain optimal operating temperatures
  • Maximum continuous operating temperature of 230°F (110°C)

Performance Specifications:

  • Maximum output: 311 amps (cold, 9,000 RPM)
  • Sustained cruising output: 227 amps (hot, 6,000 RPM)
  • Sustained idle output: 198 amps (hot, 3,000 RPM)
  • Optimized for high performance at idle speeds
  • 138mm stator size with 16 rotor poles
  • 12 avalanche-rated diodes (6 positive, 6 negative, 50A rated)

Technical Details:

  • External regulation only (P-Type field, includes terminal block and P-Type harness)
  • Compatible with Arco Zeus Bluetooth alternator regulator for maximum performance
  • 3.15" J-180 saddle style mounting replaces Hitachi, Lucas, Mitsubishi small case styles
  • 49K6 standard pulley (6-groove, 49mm) on 17mm diameter shaft
  • M8 thread post battery connection, side mount
  • Cut-in RPM: 1,061 alternator RPM / Maximum RPM: 19,000
  • SAE J1171 Certified

What's Included: Alternator with terminal block, P-Type harness, pulley hardware (M17 x 1.5 x 24mm nut with washer)

Made in the USA with premium OEM components. The Cerakote/E-coat finish absorbs less heat for sustained high-amperage output, making this alternator the professional choice for vessels and vehicles requiring reliable, high-capacity charging systems.

Note: This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

So Far So Good. i will continue to check you guys out.

quick and easy great price

Order clutch set for 1966 corvair it is not the correct part called customer service they say don't show one yet web says the one shown is correct

Part was in stock and simple to check out

Called customer service just to verify the part fits.

Different # on product part. I'm hoping it is still correct part to fit.

Part arrived early and was a direct fit. Thank you

So easy and $20 less than on Amazon!!!

Received right on time

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