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

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

Marsoni

M251S

$100.04

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

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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This is my first experience with K&N engine oil filters. I purchased one through AMZN and it was cheaper than expected. I may have purchased it on sale, because it was only $10. K&N is known to have great products, so I will update this review after I've used this filter for a while. So far, it seems to be working fine.

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Reviewed in the United States on June 25, 2024

Verified Purchase

Raptor

Alexandria, US

★★★★★ 5

Near OEM quality at 1/4 cost

Near OEM performance at 25% of the cost! Bosch Quality replaced NGKs/Toyota OEMs. Great value and now the engine is running smoothly! I have seen a slight improvement in my mpg @1mpg overall in mixed driving conditions.

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Reviewed in the United States on April 22, 2026

Verified Purchase

Joe H.

Lowell, US

★★★★★ 5

Very Expensive

Had one cylinder misfiring so replaced coil and spark plug. Runs fine now, but old plug looked shot after only 5 months so I think the coil was the problem. Really good plug so far but very expensive.

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Reviewed in the United States on February 12, 2026

Verified Purchase

rkab8745

Lexington, US

★★★★★ 5

A reliable set of spark plugs.

They’re made in Germany, what else can you say

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Reviewed in the United States on April 24, 2026