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Cometic C5645-066 GM LT1/LT4 Gen V Small Block MLS Head Gasket 4.040" Bore

Manufacturer

Picture for manufacturer Cometic

Part Number

C5645-066
4 reviews
Sale Price

$127.72

Estimated ship date Friday, October 23

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Cometic C5645-066 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for GM LT1 and LT4 Generation V (Gen-5) small block V8 engines. This gasket features a .066" compressed thickness and is designed for a 4.040" bore diameter, making it ideal for stock and modified engine builds.

Key Features:

  • Multi-Layer Steel (MLS) construction provides superior sealing and durability
  • 4.040" bore diameter for precise fitment
  • .066" compressed gasket thickness
  • Engineered for GM LT1 and LT4 Gen-5 small block V8 engines
  • Accommodates thermal expansion and cylinder bore distortion
  • Ideal for both street performance and racing applications

Cometic's MLS gaskets feature multiple layers of stainless steel with specialized coatings that ensure excellent recovery and reusability. The gasket's design allows it to withstand extreme temperatures and cylinder pressures while maintaining a consistent seal. This gasket is perfect for engine builders looking for reliable head sealing in high-performance applications.

Products specifications

Prop 65 (C, R or CR)

CR

Prop 65 Yes/No

Yes

Material

Multi-layer Steel

Prop 65 - Short Label

Prop_65.jpg

Prop 65 Warning Label

Prop_65.jpg

Prop 65 - Short Label

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Great product, fast shipping!!

Unbeleively fast shipping. I ordered on a Tuesday night, and it was delivered to my door by Thursday. Plus, the item was the cheapest with shipping on the web! I will most certainly be doing business with them again!

Easy lookup and like style of shock listing

Great selection and easy checkout! The only thing is I didnt get an email confirmation as soon as I order which made me wonder is the transaction went through. I did get an email once the items were shipped though.

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