My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Cometic C5637-030 MLS Cylinder Head Gasket GM/Mercury Marine Big Block Bore - V8 4.600

Part of: Cometic MLS Cylinder Head Gasket Chevy Big Block Bore

Other options in this family: Cometic C5331-080 Cometic C5816-045 Cometic C5332-040 Cometic C5760-040 Cometic C5434-066

Manufacturer

Picture for manufacturer Cometic

Part Number

C5637-030
7 reviews
Sale Price

$100.59

Estimated ship date Friday, November 27

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Cometic C5637-030 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 gasket features a .030" compressed thickness and is designed to accommodate a 4.600" bore diameter, making it ideal for performance marine and automotive applications.

Key Features:

  • Multi-Layer Steel (MLS) construction provides superior sealing and durability under high-compression and high-heat conditions
  • .030" compressed thickness for precise deck height control
  • 4.600" bore diameter design fits GM/Mercury Marine Big Block V8 applications
  • Compatible with Gen-IV, Gen-V, and Gen-VI engine platforms
  • Engineered with 4 bolt holes in the lifter valley for proper installation alignment
  • Provides excellent combustion sealing and resistance to gasket failure

Cometic Gaskets are manufactured using advanced materials and precision manufacturing processes to ensure reliable performance in demanding marine and high-performance automotive environments. The MLS design allows the gasket to recover and maintain seal integrity through multiple heat cycles, making it an excellent choice for both stock and modified engines.

Products specifications

Prop 65

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

Material

Multi-layer Steel

Great customer service and support. a live person answered the phone and was able to reccomend the correct product for my vehicle. Best price online too........i woould most absolutely use them again! Great company!

Right item, right price !

Lowest prices of what I was looking for and super fast shipping!!

Great service, bought my corner lights quickly and efficiently. Their site was easy to use, the order process was simple, and the prices were great in everything I looked at and bought. Deffinately will be using Autoplicity again!

BEST PRICE AROUND, HANDS DOWN. Shipping was fast and communication was impeccable. THANKS FOR THE PROFESSIONALISM.

SO far, so good. We ordered a new Weathertech Trunk Liner from Autoplicity for our new VW SportWagen. We were pleased to find exactly what we were looking for for $50 less than other locations.

Great merchant! I would most certainly would do business with them again. Customer Service was extremely helpful and my order shipped quickly.

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy