No hassle
returns
Live in-stock
inventory
Save over
60% retail
You have no items in your shopping cart.
August Sale: $125.75
In Stock
May ship from manufacturer
Free Shipping
Part number: C5740-040
Product Details
Cometic C5740-040 in our Head Gaskets Deptartment
Products specifications
Bore 4.120in
Bore (in) 4.120 in.
Bore (mm) 104.648mm
Calculator Compression Calculator
Compressed Thickness (in) 0.040 in.
Compressed Volume (cc) 8.739cc
Gasket Material Multi-layer steel
Lock Wire No
Material MLS
Quantity Sold individually.
Thickness .040in
Engine GM 229/262 3.8/4.3L 90 Degree V6
Bore Configuration Valve Pocketed Bore
Head Gasket

Cometic Head Gaskets are developed with the performance enthusiast in mind. With so many individual requirements for each motor Cometic offers a number of options to suit your specific motor and needs.

MLS
The Cometic MLS gasket is comprised of three layers of Stainless Steel. Cometic uses Stainless steel for increased strength, its ability to rebound and corrosion resistance. The outer layers of the gasket are embossed and coated on both sides with a flouroelastomer rubber based material (Viton) designed to meet the demands of a variety of harsh sealing environments, load conditions and surface finishes. The Viton coating is heat resistant to 2500C or 4820F.

The center or shim layer of the gasket is comprised of an uncoated Stainless Steel layer, which can be varied to accommodate multiple thickness requirements. The MLS gasket is ideal for both aluminum heads to cast iron blocks and aluminum heads to aluminum blocks.

The composition of MLS will also withstand the shearing forces created by aluminum heads on cast iron blocks. No re-torque is necessary. By design the MLS gasket promotes an even torque load across the sealing surface allowing for measurable reduced bore distortion.

CFM-20
A perforated steel core with an elastomer surface is ideal for head gaskets allowing heat to be drawn evenly across the gasket surface while providing maximum sealing characteristics when exposed to coolants and oils.

COPPER

Reviews
Add your review
S
Found item i was looking for at a better price than any other website! Fast shipping and great custumer service. will be buying from them again. Thanks!
J
The site was easy to use and I'm currently awaiting my items.  So far the ease with shopping using autoplicity was what I expect of a web site - extremely easy and user friendly.  Way to go guys and keep up the great work!
X
Very fast transaction and shipping info.. Best price found on the internet..
M
Had the hard to find part I was looking for in stock. Ordered it late saturday night, first thing monday morning it was shipped out! Couldnt of asked for more!
Show All Reviews
Fitment
Chevrolet Astro
1995 Chevrolet Astro Base / CL / LS / LT
1994 Chevrolet Astro Base / CL / CS / LT
1993 Chevrolet Astro Base / CL / CS / LT
1992 Chevrolet Astro Base / CL / CS / LT
1991 Chevrolet Astro Base / CL / CS / LT
1990 Chevrolet Astro Base / CL / CS / LT
1989 Chevrolet Astro Base / CL / CS / LT
1988 Chevrolet Astro Base / CL / CS / LT
1987 Chevrolet Astro Base / CL / CS / LT
1986 Chevrolet Astro Base / CL / CS
1985 Chevrolet Astro Base / CL / CS
Chevrolet Blazer
1995 Chevrolet Blazer ALL / Base / Deluxe / LT
Chevrolet C10
1986 Chevrolet C10 Custom / Scottsdale / Silverado
1985 Chevrolet C10 Custom / Scottsdale / Silverado
Chevrolet C1500
1995 Chevrolet C1500 Base / Cheyenne / Silverado / WT
1994 Chevrolet C1500 Base / Cheyenne / Silverado / WT
1993 Chevrolet C1500 Cheyenne / Silverado / WT
1992 Chevrolet C1500 Cheyenne / Silverado / WT
1991 Chevrolet C1500 Cheyenne / Silverado / WT
1990 Chevrolet C1500 Cheyenne / Scottsdale / Silverado / WT
1989 Chevrolet C1500 Cheyenne / Scottsdale / Silverado
1988 Chevrolet C1500 Cheyenne / Scottsdale / Silverado
Chevrolet C20
1986 Chevrolet C20 Custom / Scottsdale / Silverado
1985 Chevrolet C20 Custom / Scottsdale / Silverado
Chevrolet C2500
1995 Chevrolet C2500 Base / Cheyenne / Silverado / WT
1994 Chevrolet C2500 Base / Cheyenne / Silverado / WT
1993 Chevrolet C2500 Cheyenne / Silverado
1992 Chevrolet C2500 Cheyenne / Silverado
1991 Chevrolet C2500 Cheyenne / Silverado
1990 Chevrolet C2500 Cheyenne / Scottsdale / Silverado
1989 Chevrolet C2500 Cheyenne / Scottsdale / Silverado
1988 Chevrolet C2500 Cheyenne / Scottsdale / Silverado
Chevrolet Camaro
1981 Chevrolet Camaro Berlinetta / Sport
1980 Chevrolet Camaro Base / Berlinetta / Rally Sport
Show All Vehicle Fitments
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