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Arco Starting & Charging 4010 Zeus A225S 225-Amp Marine Alternator 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

4010
07/13/2036 1:25 PM
Sale Price

$714.61

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Usually delivered within 2 days

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Product Details

The Arco Zeus A225S is a high-output 225-amp marine alternator engineered to deliver exceptional power in a compact small-frame design. Featuring a 3.15" J-180 saddle-style mount, this alternator replaces most Hitachi, Lucas, and Mitsubishi small case alternators, making it ideal for Yanmar and similar marine engines.

Advanced Cooling Technology:

The A225S runs 8-20% cooler than conventional alternators thanks to heat-shedding Cerakote or E-coat finish, exterior-mounted rectifiers, and dual cooling fans. Cooler operation means sustained high-amperage output without thermal throttling, perfect for rapidly charging large battery banks on boats, RVs, or commercial vessels.

Key Features:

  • Maximum output of 254 amps (cold, 9,000 RPM) with 187 amps sustained at cruise (hot, 6,000 RPM)
  • 157 amps sustained output at idle speeds (hot, 3,000 RPM) for excellent low-RPM performance
  • 12-volt system with external regulation; compatible with Arco Zeus Bluetooth regulators for lithium battery charging
  • 130mm stator with 16-pole rotor and 12 avalanche-rated 50A diodes (6 positive, 6 negative)
  • M8 threaded side-mount battery post with terminal block connection
  • Standard 6-groove 49mm pulley (49K6) on 17mm diameter shaft with M17 x 1.5 threading
  • SAE J1171 Marine Certified for reliable operation in harsh marine environments
  • Proudly manufactured in the USA with OEM components

Technical Specifications:

  • Voltage: 12V, Output: 14.1V (default)
  • Weight: 12 lbs (6.7 kg)
  • Cut-in speed: 1,061 alternator RPM
  • Maximum alternator RPM: 19,000
  • Frame: Small case, 3.15" J-180 saddle mount
  • Finish: Black Cerakote or E-coating
  • Field type: P-type, External regulation only

This alternator reduces or eliminates the need for onboard generators by maximizing your engine's power generation capability. The advanced coating technology absorbs less heat, allowing the A225S to maintain peak amperage output for extended periods—essential for modern marine electrical systems with house batteries, inverters, and high-demand electronics.

Received order as promised, packaged well and items were exactly as advertised.

Good detail of product at a fair price. Thank you!

You have the shipping option I need

Great product

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