Cometic Chevy BB 4.63in Bore .040 inch MLS 396/402/427/454 Head Gasket

Cometic Chevy BB 4.63in Bore .040 inch MLS 396/402/427/454 Head Gasket

Marsoni

M251S

$107.98

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

Cometic Chevy BB 4.63in Bore .040 inch MLS 396/402/427/454 Head GasketComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 040". 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 the two

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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.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

When I purchased this, it said it fit my 2007 Toyota Prius. Not even close. The problem with the smaller item purchases, is you end up giving the company money and it’s just not worth my effort to re-bag it, and find where I would need to return it. I would be extremely cautious if purchasing from this company.

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Reviewed in the United States on February 17, 2026

Verified Purchase

Josh Frank

San Leandro, US

★★★★★ 5

Smells fresh!

Color: Blue

This filter does a great job of keeping my truck AC smelling fresh. It has a bit of a chemical smell the first day or so but clears up nice

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Reviewed in the United States on May 22, 2026