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Cometic Chevy Small Block 4.200 inch Bore .066 inch MLS-5 Head Gasket (w/All Steam Holes)

Marsoni M251S
Sale price$128.84
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Cometic Chevy Small Block 4.200 inch Bore .066 inch MLS-5 Head Gasket (w/All Steam Holes)Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 066". With Steam Holes. 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
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4.8 ★★★★★
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ron satallante
Natrona Heights, US
★★★★★ 4
Better
It does quite lifters a little, not as much as I would like for my 4 cyclinder turbo engine
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 2, 2024
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Rey F.
Pawtucket, US
★★★★★ 5
Encantado con el producto
Reparo inmediatamente mi falla de carburador por suciedad en mi 1989 mazda b2200.(muchos años sin usar y claro,desmonte primero el tanque de gas afuera y lo limpie)
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Reviewed in the United States on May 25, 2026
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The Mechanic
Chelsea, US
★★★★★ 5
Fuel and repair costs are rising…
Why not make your (overpriced) fuel work for you? If you appreciate your internal combustion engine, and want to help avoid costly repairs or maintenance to your fuel injector system, you can! To be honest the quality of fuel is often questionable (I’m looking right at you, ethanol). Modern fuel injection systems are squeezed for every iota of fuel economy and performance. It makes sense to be a little proactive with the preventative maintenance, it’s just good sense. Adding Jectron to your fuel is a smart, and economical measure that you can take, to keep your injection system running as designed. It won’t damage your emissions components, it won’t harm your fuel systems more delicate parts (O-rings, plastic tubing, filters, etc.). There are plenty of great options out there, such as Chevron’s Techron, and a handful of other reputable products. I used to be a very strong advocate of Techron (it’s still my backup choice). However, after witnessing Jectron solve a battery of problems on a variety of vehicles, I’m a convert.
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Reviewed in the United States on March 20, 2023
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George Dordoni
Omaha, US
★★★★★ 5
Quick and Competent!
Fast service. Exactly as ordered.
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Reviewed in the United States on September 16, 2025
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MI
Alexandria, US
★★★★★ 5
Perfect fit
Color: 20pcs
Perfect replacement retainer clips for my car.
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Reviewed in the United States on February 15, 2026

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