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Arco Starting & Charging 20800 Mercruiser Alternator 70 Amp 12V

Manufacturer

Arco Starting & Charging

<h3>ARCO Starting &amp; Charging: The Marine Industry&apos;s Gold Standard</h3><p>When a boater turns the key and nothing happens miles from the dock, the name they wish they had trusted is <strong>ARCO Marine</strong>. For more than six decades, ARCO Starting &amp; Charging has been the benchmark for dependable marine engine electrical components — building and testing every unit at their facility in Pensacola, Florida to ensure each part meets or exceeds original equipment manufacturer (OEM) specifications before it ever reaches a customer.</p><p>Founded in 1960, ARCO set out with a straightforward mission: deliver peace of mind to boat owners and marine technicians through products they can rely on. That philosophy hasn&apos;t changed. Every component ARCO manufactures — from outboard <a href="/7236-arco-starting-charging-starter-motor-4152">starter motors</a> to high-output alternators — is rigorously load-tested beyond normal operating conditions. It&apos;s the kind of commitment that has made ARCO the trusted choice of professional marine service technicians and weekend boaters alike for generations.</p><h3>Purpose-Built for the Harshest Marine Environments</h3><p>Saltwater, humidity, and vibration are relentless adversaries for any electrical component. ARCO engineers their products specifically for these conditions. Their <a href="/7236-arco-starting-charging-tilttrim-motors-201071">tilt/trim motors</a> and <a href="/7236-arco-starting-charging-trim-and-tilt-units-201108">trim and tilt units</a> are designed to perform reliably through years of saltwater exposure, while their <a href="/7236-arco-starting-charging-alternators-200087">alternators</a> — including the advanced Zeus High Output Alternator line — are purpose-built to charge modern battery banks faster and handle the electrical demands of today&apos;s feature-rich vessels. ARCO makes OEM replacement parts compatible with leading engine manufacturers including Mercury, Yamaha, Volvo Penta, MerCruiser, Honda, Evinrude, Suzuki, and many others, making cross-referencing straightforward for technicians and DIYers alike.</p><h3>Innovation with the Zeus High Energy Platform</h3><p>ARCO&apos;s Zeus line represents the brand&apos;s push into next-generation marine charging technology. Zeus High Output Alternators and Bluetooth-enabled voltage regulators are engineered for multi-voltage compatibility and rated IP68 for protection against water intrusion — a critical specification in marine applications. The Zeus ecosystem is purpose-built to support lithium battery banks, high-draw accessories, and demanding live-aboard or commercial use cases where consistent power output is non-negotiable.</p><h3>OEM Quality, Factory Warranty, American-Made</h3><p>ARCO backs their entire rotating electric parts lineup — including their <a href="/7236-arco-starting-charging-starters-inboard-201008">inboard starters</a> — with the ARCO Assurance warranty program, offering coverage against defects in materials and workmanship. Manufacturing, quality testing, warehousing, and fulfillment all take place in the United States, giving buyers confidence in consistent quality control from start to finish. For anyone maintaining a vessel and unwilling to compromise on reliability, ARCO Starting &amp; Charging remains the definitive choice in marine engine electrical components.</p>

Part Number

20800
09/12/2036 4:32 AM
Sale Price

$202.89

2 left at this price

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Usually delivered within 2 days

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Product Details

The Arco Starting & Charging 20800 is a high-output 70-amp alternator designed specifically for Mercruiser marine engines from 1998 and newer. This direct-replacement alternator is engineered to provide reliable charging performance for 4.3L through 8.2L Mercruiser applications.

Key Features:

  • 70-amp output at 12 volts for dependable charging capacity
  • Internal fan cooling design for efficient heat dissipation
  • Includes 65-mm multi-groove serpentine pulley for easy installation
  • Direct replacement for Mercruiser OEM part numbers 862031T and 862031T1
  • Compatible with Mercruiser 4.3L, 5.0L, 5.7L, 6.2L, 7.4L, and 8.2L engines

This alternator features an internal fan configuration that provides superior cooling during operation, extending component life and ensuring consistent performance in demanding marine environments. The included serpentine pulley is ready to install, making this a complete replacement solution for your Mercruiser charging system.

Products specifications

Type

New

Wish Canada or Amazon.ca carried these anchors. Maybe you could look into that. A follow-up would be appreciated since the information does not show the weight of your item, hoping it is only 4 pounds for us old goats :)

Great price and nice shipping discount coupon

A few items could have a better description.

Thanks

Best prices with fast shipping and order updates. Will buy from again.<br>

Very good so far.

Great Price and Fast Shipping

Quick shipping and great price!

it was very easy and simple, thank you

Looked all over Internet including eBay and autoplicity had best price shipping now let's see Thanx

Placed my order for my K&N CAI on saturday, but didnt have enough cash so the order finalized on sunday morning. Autoplicity provided excellent service via phone and I should be receiving my CAI later today!!!! Super Stoked. Thank you Autoplicity for providing good service!!<br>Will buy from this site again!!

Great service, and great price<br>They were even nice enough to give 5 dollars credit for a review<br><br>Will buy again

A+++++<br>Order was placed on a sunday.<br>It was sitting on my doorstep wednesday morning! <br>Would recommend to anyone.<br>Great Prices!

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