Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
Availability
Cometic Engine Gaskets
Now you can have race-proven performance on your daily driver! Founded in 1989, Cometic Gasket is a leading worldwide supplier of short-run and custom gaskets for the...
Now you can have race-proven performance on your daily driver! Founded in 1989, Cometic Gasket is a leading worldwide supplier of short-run and custom gaskets for the motorsports market. To ensure maximum performance for various engine types and sizes, Cometic manufactures gaskets in a wide range of materials, including Multi-Layered Steel (MLS) and Aramid Fiber. The gaskets are rigorously tested in the most demanding driving conditions and have proven themselves on NHRA/IHRA and NASCAR tracks nationwide. Whether you’re sealing a street/strip machine or daily driver, Cometic Gasket will give you maximum performance.
Now you can have race-proven performance on your daily driver! Founded in 1989, Cometic Gasket is a leading worldwide supplier of short-run and custom gaskets for the motorsports market. To ensure maximum performance for various engine types and sizes, Cometic manufactures gaskets in a wide range of materials, including Multi-Layered Steel (MLS) and Aramid Fiber. The gaskets are rigorously tested in the most demanding driving conditions and have proven themselves on NHRA/IHRA and NASCAR tracks nationwide. Whether you’re sealing a street/strip machine or daily driver, Cometic Gasket will give you maximum performance.
Showing In Stock Items. Show All 181 Items.
Head Gasket, 4.600 in. Bore, .051 in. Compressed Thickness, Chevy, Big Block, Each
Part Number: CGT-C5641-051
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Head Gasket, MLS, Marine, 4.600 in. Bore, .040 in. Compressed Thickness, Chevy, Each
Part Number: CGT-C5641-040
Not Yet Reviewed
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Head Gasket, 4.500 in. Bore, 0.040 in. Thickness, Each
Part Number: CGT-C5634-040
Not Yet Reviewed
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Head Gasket, MLS, Marine, 4.600 in. Bore, .080 in. Compressed Thickness, Chevy, Each
Part Number: CGT-C5637-080
Not Yet Reviewed
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Head Gasket, 4.530 in. Bore, .040 in. Compressed Thickness, Chevy, Big Block, Each
Part Number: CGT-C5635-040
Not Yet Reviewed
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Head Gasket, 4.500 in. Bore, .051 in. Compressed Thickness, Chevy, Big Block, Marine, Each
Part Number: CGT-C5638-051
Not Yet Reviewed
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Head Gasket, MLS, Marine, 4.600 in. Bore, .027 in. Compressed Thickness, Chevy, Each
Part Number: CGT-C5637-027
Not Yet Reviewed
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Head Gaskets, MLS Marine, 4.600 in. Bore, Chevrolet, Big Block, Designed To Fit Mercury Marine 1050 Gen IV with 2-bolt Intake Side of Gasket, Each
Part Number: CGT-C5641-070
Estimated Ship Date: Jun 19, 2026 if ordered today
Estimated Ship Date: Jun 19, 2026 if ordered today
.045" MLS GEN 4,5&6 BLOCKS
Part Number: CGT-C5636-045
Not Yet Reviewed
Estimated Ship Date: Jun 19, 2026 if ordered today
Estimated Ship Date: Jun 19, 2026 if ordered today
Head Gaskets, MLS Marine, 4.600 in. Bore, Chevrolet, Big Block, Designed To Fit Mercury Marine 1050 Gen IV with 2-bolt Intake Side of Gasket, Each
Part Number: CGT-C5641-060
Not Yet Reviewed
Estimated Ship Date: Jun 19, 2026 if ordered today
Estimated Ship Date: Jun 19, 2026 if ordered today
.075" MLS-5 GEN 4,5&6 BLOCKS
Part Number: CGT-C5634-075
Not Yet Reviewed
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Head Gasket, 4.500 in. Bore, .027 in. Compressed Thickness, Chevy, Big Block, Each
Part Number: CGT-C5634-027
Estimated Ship Date: Jun 19, 2026 if ordered today
Estimated Ship Date: Jun 19, 2026 if ordered today
Head Gasket, MLS, Marine, 4.530 in. Bore, .051 in. Compressed Thickness, Chevy, Each
Part Number: CGT-C5639-051
Not Yet Reviewed
Estimated Ship Date: Jun 22, 2026 if ordered today
Estimated Ship Date: Jun 22, 2026 if ordered today
Head Gasket, MLS, Marine, 4.600 in. Bore, .070 in. Compressed Thickness, Chevy, Each
Part Number: CGT-C5637-070
Not Yet Reviewed
Estimated Ship Date: Jun 19, 2026 if ordered today
Estimated Ship Date: Jun 19, 2026 if ordered today
Head Gasket, MLS, Marine, 4.600 in. Bore, .075 in. Compressed Thickness, Chevy, Each
Part Number: CGT-C5641-075
Not Yet Reviewed
Estimated Ship Date: Jun 19, 2026 if ordered today
Estimated Ship Date: Jun 19, 2026 if ordered today
Head Gasket, Marine, 4.580 in. Bore, .036 in. Compressed Thickness, Chevy, Each
Part Number: CGT-C5640-036
Not Yet Reviewed
Estimated Ship Date: Jun 19, 2026 if ordered today
Estimated Ship Date: Jun 19, 2026 if ordered today
Head Gasket, MLS, Marine, 4.500 in. Bore, .027 in. Compressed Thickness, Chevy, Each
Part Number: CGT-C5638-027
Not Yet Reviewed
Estimated Ship Date: Jun 19, 2026 if ordered today
Estimated Ship Date: Jun 19, 2026 if ordered today
Head Gasket, MLS, Marine, 4.600 in. Bore, .030 in. Compressed Thickness, Chevy, Each
Part Number: CGT-C5637-030
Not Yet Reviewed
Estimated Ship Date: Jun 19, 2026 if ordered today
Estimated Ship Date: Jun 19, 2026 if ordered today
.086" MLS-5 GEN 4,5&6 BLOCKS
Part Number: CGT-C5634-086
Not Yet Reviewed
Estimated Ship Date: Jun 19, 2026 if ordered today
Estimated Ship Date: Jun 19, 2026 if ordered today
Gasket, Head Gasket, Multi Layer Steel, 4.530 in. Bore, 0.040 in. Thickness, Chevy, Big Block, Each
Part Number: CGT-C5639-040
Not Yet Reviewed
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Head Gasket, MLS, Marine, 4.600 in. Bore, .066 in. Compressed Thickness, Chevy, Each
Part Number: CGT-C5637-066
Not Yet Reviewed
Estimated Ship Date: Jun 19, 2026 if ordered today
Estimated Ship Date: Jun 19, 2026 if ordered today
Head Gasket, MLS, 4.600 in. Bore, .027 in. Compressed Thickness, Mercury Marine, Each
Part Number: CGT-C5641-027
Not Yet Reviewed
Estimated Ship Date: Jun 19, 2026 if ordered today
Estimated Ship Date: Jun 19, 2026 if ordered today
Head Gasket, MLS, Marine, 4.560 in. Bore, .060 in. Compressed Thickness, Chevy, Each
Part Number: CGT-C5636-060
Not Yet Reviewed
Estimated Ship Date: Jun 19, 2026 if ordered today
Estimated Ship Date: Jun 19, 2026 if ordered today
.045" MLS GEN 4,5&6 BLOCKS
Part Number: CGT-C5634-045
Not Yet Reviewed
Estimated Ship Date: Jun 19, 2026 if ordered today
Estimated Ship Date: Jun 19, 2026 if ordered today
Head Gasket, Marine, MLS, 4.580 in. Bore, 0.051 in. Thickness, Chevy, Each
Part Number: CGT-C5640-051
Not Yet Reviewed
Estimated Ship Date: Monday 4/20/2026 if shipped by air
Estimated Ship Date: Monday 4/20/2026 if shipped by air
