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Cometic C5634-060 MLS Cylinder Head Gasket GM Mercury Marine Big Block V8 4.500" Bore

Manufacturer

Picture for manufacturer Cometic

Part Number

C5634-060
7 reviews
Sale Price

$136.54

Estimated ship date Monday, October 19

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Cometic C5634-060 is a premium multi-layer steel (MLS) cylinder head gasket engineered specifically for GM and Mercury Marine Big Block V8 Gen-IV, Gen-V, and Gen-VI engines. This high-performance gasket features a 4.500-inch bore diameter and .060-inch compressed thickness, making it ideal for performance marine and automotive applications requiring precise sealing and durability.

Key Features:

  • Multi-layer steel (MLS) construction provides superior sealing and durability under extreme conditions
  • 4.500-inch bore diameter accommodates performance big block applications
  • .060-inch compressed thickness allows for precise compression ratio tuning
  • Designed for engines with 4 bolts in the lifter valley configuration
  • Compatible with GM and Mercury Marine Gen-IV, Gen-V, and Gen-VI Big Block V8 engines
  • Engineered to withstand high cylinder pressures and temperatures in marine environments

Cometic gaskets are manufactured using advanced materials and processes to ensure consistent quality and performance. The MLS design accommodates engine movement and thermal expansion while maintaining an effective seal between the cylinder head and block, making this gasket an excellent choice for both stock rebuilds and high-performance builds.

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 - Short Label

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

Prop 65 Warning Label

Prop_65.jpg

product just as described, received in 3 days

I paid for 2nd day shipping and 5 days later they were shipped out. So, I should receive my rotors in a full week from when I paid for 2 day shipping. I called customer service and they discounted the shipping rate to ground service. At least they were polite and helpful in the phone.

Great deals at unbeatable prices!

Great prices will shop here again.

Excellent on-line merchant with outstanding customer service and the best prices on equipment and shipping. Highly reccomended!

Good prices and easy ordering process (order #18003). The only issue that I had was after placing the order, completing the entire process, I received three emails stating that "We noticed that you started checking out on our site, but didn't quite finish the process". After calling customer service, they ensured me that the order was complete. Since then, I receive the same email(3 emails at a time) on a daily basis. Just a little annoying, but easy enough to delete.

Found part quickly. Price was competitive.

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