ARCO Marine Replacement Alternator f/Mercury Engines - 135 150 HP [20851]

ARCO Marine Replacement Alternator f/Mercury Engines - 135 150 HP [20851]

Marsoni

M251S

$160.50

Get it in 3 business days with 1 day shipping. Friday, May 29

ARCO Marine Replacement Alternator f/Mercury Engines - 135 150 HP [20851]Replacement Alternator for Mercury Engines 135 & 150 HP Replacement alternator that will fit Mercury Outboard Engines 135 HP 150 HP, 12 Volt, 55 AMP, 4 grooves, pulley included. Features: All alternators are engineered for performance and reliability. All alternators are engineered and manufactured with precision and quality. All alternators must meet or exceed OEM performance before being boxed. Warranty Information: When properly installed, all ARCO

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We offer a 30-day return/exchange service after receiving.
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I used this as a replacement starter for a 2008 CRV. Quick answer, it works so far and sounds fine. It replaced a fairly newly rebuilt OEM starter - "factory rebuilt in the USA" - so much for them- very dissapoiinting. When I looked for replacement EVERY starter I looked at locally had horrible reviews online with consistency issues - some worked, some didn't. I figured, if that's the case, buy the cheapest one. So far this Boatrip is the real deal - beautifully machined and went in just like the original. I went ahead and took off the intake manifold - it was a huge job for me. I ended up tearing my throttle body gasket and didn't replace it. Now I have a fast idle check engine light. So, I'll need to take that part apart and replace the gasket. I guess it's sucking air and throwing off the idle speed. otherwise, the YouTube videos really helped on the repair. I hope I don't have to do it again. Good luck!

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Reviewed in the United States on September 6, 2025

Verified Purchase

Kayla

Louisville, US

★★★★★ 5

Good 👍

Works just like oem

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Reviewed in the United States on February 26, 2026

Verified Purchase

Whorley boi

Natrona Heights, US

★★★★★ 4

Price

Perfect fit at a great price

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Reviewed in the United States on March 18, 2026

Verified Purchase

Jeffrey Hodge

Massapequa, US

★★★★★ 5

Good luck

So far so good,fit perfectly but was a real bitch to replace on a 09 Crv. Tried from underneath but couldn’t get to the rear bolt, so I had to go from the top. Poor engineering on Hondas part.

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Reviewed in the United States on March 29, 2026