Automotive Gaskets & Seals

From intake to exhaust, gaskets are always at the center of the action, providing the positive, leak-free seal your vehicle’s vital systems require to run at peak efficiency....

From intake to exhaust, gaskets are always at the center of the action, providing the positive, leak-free seal your vehicle’s vital systems require to run at peak efficiency. We have the automotive gaskets and seals for your daily driver or dedicated race car in individual pieces that are perfect for general maintenance or full sets with every gasket and seal you need for a complete engine rebuild. Choose from factory-replacement materials like cork and rubber, or high-tech gaskets made from multi-layer steel, dead-soft aluminum, copper, and more—all designed to withstand extreme heat and pressure.

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Cometic MLS Head Gaskets C5245-040

Cometic MLS Head Gaskets C5245-040

Head Gasket, MLS, 4.060 in. Bore, .040 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5245-040

4.55 out of 5 stars ( 20 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets C5248-040

Head Gasket, MLS, 4.165 in. Bore, .040 in. Compressed Thickness, Chevy, Small Block, Each

Part Number: CGT-C5248-040

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets C5511-027

Head Gasket, MLS, 4.030 in. Bore, .027 in. Compressed Thickness, Ford, Lincoln, Mercury, Each

Part Number: CGT-C5511027

4.92 out of 5 stars ( 12 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets C5399-040

Head Gasket, 4.030 in. Bore, .040 in. Compressed Thickness, Chevy, Small Block, Each

Part Number: CGT-C5399-040

4.22 out of 5 stars ( 9 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets C5489-051

Head Gasket, MLS, 4.100 in. Bore, .051 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5489-051

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets C5331-060

Head Gasket, Multi-layer Steel, 4.630 in. Bore, .060 in. Compressed Thickness, Chevy, Big Block, Each

Part Number: CGT-C5331-060

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets C5245-023

Head Gasket, Multi-Layer Stainless Steel, 4.060 in. Bore, 0.023 in. Thickness, Round Bore Style, Each

Part Number: CGT-C5245-023

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets C5331-040

Head Gasket, Multi-layer Steel, 4.630 in. Bore, .040 in. Compressed Thickness, Chevy, Big Block, Each

Part Number: CGT-C5331-040

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets H1295SP5051S

Head Gasket, Multi-layer Steel, 4.030 in. Bore, .051 in. Compressed Thickness, Chevy, 5.7, 6.0L, LS, Each

Part Number: CGT-H1295SP5051S

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLX Head Gaskets C5505-040

Head Gasket, MLX, 4.040 in. Bore, .040 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5505-040

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLX Head Gaskets for 2008-2013 CORVETTE - C5702-052

Head Gasket, MLX, 4.165 in. Bore, 0.052 in. Compressed Thickness, Chevy, LSX Race, Passenger Side, Each

Part Number: CGT-C5702-052

Not Yet Reviewed

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets C5245-027

Head Gasket, MLS, 4.060 in. Bore, .027 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5245-027

5.0 out of 5 stars ( 14 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets C5333-040

Head Gaskets, 4.540 in. Bore, .040 in. Compressed Thickness, Chevy, Big Block, Each

Part Number: CGT-C5333-040

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets H1075SP4040S

Head Gasket, 4.155 in. Bore, .040 in. Compressed Thickness, Chevy, Small Block, Each

Part Number: CGT-H1075SP4040S

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic Gasket Making Material Sheets C15543

.060" TNG MATERIAL

Part Number: CGT-C15543

Not Yet Reviewed

Estimated Ship Date: Nov 30, 2026 if ordered today

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Estimated Ship Date: Nov 30, 2026 if ordered today

Cometic MLS Head Gaskets C5475-040

Head Gasket, 3.910 in. Bore, .040 in. Compressed Thickness, Chevy, LS, 5.7, Each

Part Number: CGT-C5475-040

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLX Head Gaskets C5703-052

Head Gasket, MLX, 4.165 in. Bore, 0.052 in. Compressed Thickness, Chevy, LSX Race, Driver Side, Each

Part Number: CGT-C5703-052

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic Valve Cover Gaskets C5974

Valve Cover Gasket, Durometer Rubber with Steel Core, Ford, Lincoln, Mercury, Small Block Windsor, Each

Part Number: CGT-C5974

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets C5432-040

Head Gasket, MLS, 4.310 in. Bore, .040 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5432-040

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets C5489-060

Head Gasket, MLS, 4.100 in. Bore, .060 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5489-060

Not Yet Reviewed

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Exhaust Gaskets C5818-030

Exhaust Gaskets, Exhaust Manifold, Exhaust, Chevy, LS, Pair

Part Number: CGT-C5818-030

3.33 out of 5 stars ( 6 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets C5461-027

Head Gasket, Multi-layer Steel, 4.380 in. Bore, .027 in. Compressed Thickness, Chrysler, Big Block, Each

Part Number: CGT-C5461-027

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets C5816-027

Head Gasket, Multi-Layer Steel, 4.320 in. Bore, 0.027 in. Compressed Thickness, Chevy, Big Block, Each

Part Number: CGT-C5816-027

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets C5248-030

Head Gasket, MLS, 4.165 in. Bore, .030 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5248-030

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

Cometic MLS Head Gaskets C5248-051

Head Gasket, MLS, 4.165 in. Bore, .051 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5248-051

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/2/2026 if shipped by air

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Estimated Ship Date: Monday 11/2/2026 if shipped by air

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