Cometic 09+ GM LS9 4.100in Bore .051 thick MLS RHS Head Gasket

Cometic 09+ GM LS9 4.100in Bore .051 thick MLS RHS Head Gasket

Marsoni

M251S

$99.58

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

Cometic 09+ GM LS9 4.100in Bore .051 thick MLS RHS Head GasketComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 051". Right Side. Cometic MLX (Multi Layer Stopper) gaskets utilize an integrated stopper layer for combustion chamber sealing and improved clamp load around the cylinder without increasing bore distortion. MLX technology can be found in some head gaskets and are made from the same materials as our MLS

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I’ve been using these for several days now and I did notice a difference. I tend to get hot while sleeping, so I was curious if they would actually help, and they do feel cool when you lay on them. I also like that they’re soft and comfortable, not that weird texture some “cooling” products have. So far, I’ve been really happy with them.

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Reviewed in the United States on May 23, 2026

Verified Purchase

Iris

Alexandria, US

★★★★★ 5

Definitely recommend

Color: White, Size: Queen (20" X 30")

I highly recommend this pillow case. With two sides it is easy to stay comfortable as the weather changes. The cooling side is nicely cool to touch and both sides are incredibly soft. The size is also good.

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Reviewed in the United States on May 26, 2026

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Marcus Meiklejohn

Chelsea, US

★★★★★ 5

Nice & cool

Color: Beige, Size: King (20" X 36")

These are the best pillowcases! I love having a cooling side for summer and a warm side for winter. I can't imagine switching back to normal cotton pillowcases after using these. They zip on so they stay on unlike regular pillowcases.

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Reviewed in the United States on May 11, 2026

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ROB

Los Angeles, US

★★★★★ 4

Nice pillowcases that stay cool

very soft and seem to stay cool!

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Reviewed in the United States on April 29, 2026

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SARAH HAPNER