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

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

C5634-060
7 reviews
Sale Price

$136.53

Estimated ship date Thursday, November 26

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 C5634-060 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered for GM and Mercury Marine Big Block V8 Gen-IV, Gen-V, and Gen-VI engines. This precision gasket features a .060" compressed thickness and is designed to accommodate a 4.500" bore diameter.

Key Features:

  • Multi-Layer Steel (MLS) construction for superior sealing and durability
  • .060" compressed gasket thickness
  • 4.500" bore diameter
  • Designed for engines with 4 bolts in the lifter valley configuration
  • Compatible with GM and Mercury Marine Big Block V8 Gen-IV, Gen-V, and Gen-VI applications
  • High-temperature resistance and excellent torque retention

Cometic MLS gaskets utilize multiple layers of stainless steel with advanced coating technology to provide exceptional conformability to sealing surfaces. The embossed layers create a micro-seal around combustion chambers, coolant passages, and oil galleries, making this gasket ideal for both stock and high-performance marine and automotive applications.

Products specifications

Prop 65

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

Material

Multi-layer Steel

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.

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