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 C5739-040 MLS Cylinder Head Gasket for Chevy 4.3L V6

(GMC G2500 1985-95, Sonoma 1991-95, K1500 1985-86, 1988-95, C1500 1985-86, 1988-95, K2500 1985, 1988-95, Jimmy 1992-94, Safari 1985-94 + 50 more models)

Part of: Cometic MLS Cylinder Head Gasket Bore Honda

Other options in this family: Cometic C4311-040 Cometic C4251-030 Cometic C4232-030 Cometic C4962-028 Cometic C5434-051

Manufacturer

Picture for manufacturer Cometic

Part Number

C5739-040
6 reviews
Sale Price

$104.01

4 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

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 C5739-040 is a Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Chevrolet 4.3L Generation 1 90-degree V6 engines. This high-performance gasket features a .040" (1mm) compressed thickness and is designed for a 4.060" bore size.

Key Features:

  • Multi-Layer Steel (MLS) construction for superior sealing and durability
  • .040" compressed gasket thickness
  • 4.060" bore diameter for precise fitment
  • Engineered for Gen-1 4.3L Chevy V6 90-degree engines
  • Enhanced combustion sealing with multiple embossed layers
  • Resists blowout and withstands extreme cylinder pressures

Cometic MLS head gaskets use multiple layers of stainless steel with advanced coating technology to provide maximum sealing performance. The embossed layers allow the gasket to conform to imperfections in the sealing surface while maintaining excellent recovery properties. Ideal for performance builds, forced induction applications, and engine rebuilds requiring reliable head gasket sealing.

Products specifications

Fits

GMC G2500 1985-95, Sonoma 1991-95, K1500 1985-86, 1988-95, C1500 1985-86, 1988-95, K2500 1985, 1988-95, Jimmy 1992-94, Safari 1985-94, C2500 1985-86, 1988-95, S15 1988-90, S15 Jimmy 1988-91, P3500 1990, G3500 1985-95, Typhoon 1992-93 + 44 more models

Prop 65

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

Material

Multi-layer Steel

You can tell customer service is important to this company. Not only were the prices lower than other places but they communicate the status of the order and shipping very well. They obviously care what people think. I was suspicious of all the positive comments but decide to try them anyways. Very happy I did and definitely plan on buying from them again.

The item could have more pictures from different sides and dimensions.

Great price for the item, almost half off. Good website for auto parts

Ordered a hitch type bike rack. Great price, and received it in 4 business days. Couldn't have been easier, couldn't be more satisfied! Great Job!

Great exchange. Received product as described and in a timely manner. Thanks! Will Do business again

I am impressed with they mail order service. Recommended.

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