


Cometic Chevy BB 4.63in Bore .040 inch MLS 396/402/427/454 Head Gasket
Marsoni
M251S
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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Your Cometic Chevy BB 4.63in Bore .040 inch MLS 396/402/427/454 Head Gasket orders ship within 1-2 business days.
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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]
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4.1 ★★★★★
Based on 1169 reviews
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Product Reviews
★★★★★ 5
Great price. Great fit. Would buy again.
Fit well enough, needed to sand a little for a better fitment. Was not difficult in any way.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2021
★★★★★ 4
price
fit could be a little better. but works just fine
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Reviewed in the United States on October 20, 2025
★★★★★ 3
Lightweight but so is the original
When the package arrived it was in a very thin lightweight box that was crushed on one side. I thought for sure it was trashed. By chance…all was good. The lights are thin plastic but made very close to the original standard. They fit well on the car but the gasket needs to be tucked in around the edges. That material seems thin. The end result is actually a nice looking inexpensive light. Overall I am happy.
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Reviewed in the United States on July 8, 2023
★★★★★ 5
Bonito
Tal como la imagen
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Reviewed in the United States on February 5, 2026
★★★★★ 1
Bad quality overall
Terrible quality, has melted plastic, does not fit at all.
Please avoid this.
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Reviewed in the United States on July 31, 2025
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