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 C5765-066 MLS Cylinder Head Gasket GM Vortec Gen VII Big Block - 8100 V8

(Chevrolet Silverado 2500 HD 2001-07, Silverado 3500 HD 2007, Express 3500 2001-02, Silverado 2500 2001-05, Silverado 3500 2001-06 + 13 more models)

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

C5765-066
5 reviews
Sale Price

$144.81

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 C5765-066 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket designed specifically for GM L18 Vortec 8100 Gen-VII Big Block V8 engines. This high-performance gasket features a 4.350-inch bore diameter and .066-inch thickness, providing exceptional sealing capability for demanding applications.

Key Features:

  • Multi-Layer Steel (MLS) construction for superior durability and heat resistance
  • 4.350-inch bore diameter optimized for Vortec 8100 specifications
  • .066-inch (66 thousandths) compressed thickness for precise compression control
  • Left-hand side (LHS) application for driver-side cylinder head
  • Engineered for GM Gen-VII Big Block V8 architecture
  • Exceeds OEM sealing performance under high-pressure and high-temperature conditions

Cometic's MLS gaskets utilize multiple layers of stainless steel with specialized coatings to create a superior seal that compensates for minor surface imperfections. This design maintains excellent sealing integrity even in high-performance, high-compression, or forced-induction applications. Ideal for engine rebuilds, performance upgrades, and heavy-duty truck applications using the Vortec 8100 platform.

Products specifications

Fits

Chevrolet Silverado 2500 HD 2001-07, Silverado 3500 HD 2007, Express 3500 2001-02, Silverado 2500 2001-05, Silverado 3500 2001-06, Suburban 2500 2001-06, Silverado 2500 HD Classic 2007, G30 2001-02, Avalanche 2500 2002-06 + 9 more models

Prop 65

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

Material

Multi-layer Steel

easy order and pay thru Amazon

Good Price...easy to order

Quick and easy ordering

Bad product description. Threads are not 1/2-20 they look to a fine thread 7/16

Great Item(Husky floor mats) it was the cheapest price I could find and item arrived new in box no damage. It also arrived in a very timley manner(3days)

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