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Cometic GM/Mercury Marine Big Block V8 Gen IV/V/VI 4.580in Bore .027in MLS Cylinder Head Gasket

Marsoni M251S
Sale price$100.04
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Cometic GM/Mercury Marine Big Block V8 Gen IV/V/VI 4.580in Bore .027in MLS Cylinder Head GasketComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed thickness is 0. 027". 4 Bolts in Valley. Cometic MLS (Multi Layer Steel) Head Gaskets provide maximum sealing performance for todays high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.2 ★★★★★
Based on 1151 reviews
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Verified Purchase
Junior Omar Arias Chavarria
Los Angeles, US
★★★★★ 5
Se ve excelente
Se ve de buena calidad, aún no lo instaló pero si se aprecia muy bueno.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
A
Verified Purchase
Armando salazar
Massapequa, US
★★★★★ 5
Ez install
I really like how EZ it was to install, the display is handy tells you what your voltage is currently. Nice
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Reviewed in the United States on February 5, 2026
T
Verified Purchase
Travis Newman
Alexandria, US
★★★★★ 5
Prompt arrival
It works as it should. I have a 500 amp fuse inside. It came with a 100 amp fuse already installed. I have heard too many horror stories about being a "team no fuse". I'm glad mine came the following day after ordering it. The voltmeter is nice and clear. Although I won't keep it on all the time, just to show off when I have my hood up at gatherings 😎
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Reviewed in the United States on November 22, 2024
C
Verified Purchase
Chris
Lexington, US
★★★★★ 5
Fuse Holder Block
Size: 300A
Good Value and good product
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Reviewed in the United States on December 29, 2025
R
Verified Purchase
Riley Matzdorff
Belleville, US
★★★★★ 5
Does the job
Size: 300A
Fuses seem good quality. Did what they need to do. Would buy again.
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Reviewed in the United States on October 31, 2025

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