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Arco Starting & Charging A275L-12-DF315-IE-49K6 Zeus Marine Alternator 12V 275A J-180 Mount

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-IE-49K6
06/21/2036 9:23 AM
Sale Price

$1,040.96

2 left at this price

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Usually delivered within 2 days

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Product Details

The Arco Zeus A275L is a high-performance 12-volt marine alternator engineered to deliver exceptional power output in a compact 3.15" J-180 saddle mount design. This premium alternator is designed for marine, RV, military, and commercial applications where reliable high-amperage charging is essential for large battery banks and demanding electrical systems.

Advanced Thermal Management:

  • Runs 8-20% cooler than conventional alternators through innovative engineering
  • Heat-shedding Cerakote or E-coat finish absorbs less heat for sustained high output
  • Externally mounted rectifier improves heat dissipation
  • Dual cooling fans maintain optimal operating temperatures
  • Maximum continuous operating temperature of 230°F (110°C)

Exceptional Power Output:

  • 311 amps maximum output (cold, 9,000 RPM)
  • 227 amps sustained cruising output (hot, 6,000 RPM)
  • 198 amps sustained idle output (hot, 3,000 RPM)
  • Optimized performance at idle speeds for superior low-RPM charging
  • Rapidly charges large battery banks, reducing or eliminating need for generators

Technical Specifications:

  • Voltage: 12V with 14.1V default output voltage
  • Field Type: P-type with 16 rotor poles
  • Stator Size: 138mm with large frame construction
  • Regulation: Internal with adapter for optional external regulation
  • Diodes: 6 positive, 6 negative, 50A rated avalanche type
  • Cut-in RPM: 1,061 alternator RPM
  • Maximum RPM: 19,000
  • Weight: 14.9 lbs (6.7 kg)

Mounting and Connections:

  • 3.15" J-180 saddle style mount (replaces Hitachi, Lucas, Mitsubishi styles)
  • Compatible with most Yanmar engines
  • 49K6 standard pulley (6-groove, 49mm diameter)
  • 17mm diameter shaft, 25mm long, threaded M17 x 1.5
  • M8 thread battery post with side mount configuration
  • Mounting hardware and washer included

Quality and Certification:

  • SAE J1171 certified for marine applications
  • Made in the USA with OEM components
  • Compatible with ARCO Zeus Bluetooth alternator regulator for maximum performance
  • Suitable for lithium battery charging with proper external regulator

This alternator represents the highest power output available in its size class, making it ideal for vessels with extensive house loads, inverter systems, and large battery banks requiring rapid, efficient charging even at engine idle speeds.

Incredibly fast and prompt service

Very fast and easy

Was very fast and reliable

Good, just hope what I ordered is what I&#039;m looking for!

Excellent and fast

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