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Arco Starting & Charging 20851 Marine Alternator for Mercury Outboard Engines

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

20851
06/21/2036 9:19 AM
Sale Price

$265.66

In Stock (8)

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Usually delivered within 2 days

free shipping

FREE SHIPPING

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Arco Starting & Charging 20851 is a high-performance marine alternator designed specifically for Mercury outboard engines in the 135 HP to 150 HP range. This 12-volt, 55-amp alternator delivers reliable charging power in demanding marine environments, ensuring your electrical systems stay powered on the water.

Specifications:

  • Output: 12 Volt, 55 Amp
  • Pulley: 4-groove design, included
  • Application: Mercury Outboard Engines 135 HP - 150 HP

Key Features:

  • Engineered for superior performance and long-term reliability in marine applications
  • Manufactured with precision engineering and quality materials
  • Meets or exceeds OEM performance specifications
  • Pulley included for complete installation

OEM Cross-References:

  • Mercury 8M0065239
  • Mercury 8M0057693
  • Mercury 8M0062515

Warranty: Backed by a 12-month warranty for leisure use (90 days for commercial/racing applications) against defects in materials and workmanship. Register your product within 30 days of purchase at arcomarine.com/product-registration to receive an additional year of warranty coverage.

This direct-fit replacement alternator provides dependable charging performance for Mercury outboard owners, with the quality and durability expected from Arco Marine products.

Very satisfying and easygoing!

Easy and hassel free

Prices are competitive and I know being a repeat customer I am going to get a quality product that has not been misrepresented. It's a pleasure doing business with a reputable company.

Easy to find what I needed at competitive pricing.

It's probably me. On your site. I picked the one on your website. Looked at the one .clicked on what number it was. Then your website and credit card came up up pay and I fix then pagoda for it . Then When I received it It was wrong. . Because I didn't. Scroll down to bottom to check bulb or LED. . Description should have given me choice before. Credit card information . Ghanks

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