COMP Cams ID Spring Seats 1.55 X 570 X

Marsoni

M251S

$55.01

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

COMP Cams ID Spring Seats 1.55 X 570 XMade from hardened steel, these locators use an inboard locating shoulder to center the seat and hold the spring in place. The 4778 features a 1. 550" OD and a . 570" ID that works well with our 938 and 927 dual valve springs.

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For those of you with the 135 hp mercury that was branded as the "Sea Ray 135" and paint matched to the boat (i.e. Seville's and some others) this is the 147 degree thermostat for that motor. My Seville is an '88 and It's difficult to cross reference the serial numbers on those motors when searching for parts. Only buy Quicksilver parts for these motors. Happy to find them on Amazon because Boats.net as an example, is not clear on what you're getting.

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Reviewed in the United States on August 3, 2024

Verified Purchase

Carlton Earley

Houston, US

★★★★★ 5

fixed issue

stopped the overheat issue on my outboard!!!

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Reviewed in the United States on August 6, 2025

Verified Purchase

Brett W.

Natrona Heights, US

★★★★★ 5

Carries all the current I want. Super flexible, great price

Size: 8 AWG 3 ft per color, Color: Red and Black

Very nice high quality. Somebody tried to tell me this was aluminum strands. But after test sanding an exposed end, I could see copper color. I believe the confusion is they are individually tinned strands? 🤷 Just sayin...

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Reviewed in the United States on June 28, 2025

Verified Purchase

Noce

West Palm Beach, US

★★★★★ 5

good quality.

Size: 8 AWG 3 ft per color, Color: Red and Black

The wire worked very well for my project.

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Reviewed in the United States on April 22, 2024