Engine Gaskets, Seals & More

Cometic MLS Head Gaskets C5633-040

Cometic MLS Head Gaskets C5633-040

Head Gasket, 4.040 in. Bore, .040 in. Compressed Thickness, Chrysler, 318, 340, 360, Each

Part Number: CGT-C5633-040

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Cometic MLS Head Gaskets C5833-027

Head Gasket, MLS, 4.080 in. Bore, .027 in. Compressed Thickness, Ford, FE Big Block, Each

Part Number: CGT-C5833-027

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Cometic MLS Head Gaskets C5318-040

Head Gasket, MLS, 4.160 in. Bore, .040 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5318-040

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Cometic MLS Head Gaskets C5622-027

Head Gasket, MLS, 4.080 in. Bore, Multi-layer Stainless Steel, Chrysler, Dodge, Plymouth, Small Block, Each

Part Number: CGT-C5622-027

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Cometic MLS Head Gaskets C5475-051

Head Gasket, 3.910 in. Bore, .051 in. Compressed Thickness, Chevy, LS, 5.7, Each

Part Number: CGT-C5475-051

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Fel-Pro Valve Stem Seals SS 71152

Valve Stem Seal, Umbrella, Viton Rubber, Set of 16

Part Number: FEL-SS71152

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Cometic MLS Head Gaskets C5474-040

Head Gasket, MLS, 4.080 in. Bore, .040 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5474-040

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Cometic MLS Head Gaskets C5515-051

Head Gasket, MLS, 4.155 in. Bore, .051 in. Compressed Thickness, Ford, 289, 302, 351W, Each

Part Number: CGT-C5515-051

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Chevrolet Performance Valve Stem Seals 12482063

Valve Stem Seals, Black, Intake, Chevy, Small Block, LS, Set of 8

Part Number: NAL-12482063

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Mahle Original Valve Stem Seals SS45399

Valve Stem Seals, Original, Umbrella Type, Polyacrylic, Bricklin, DeTomaso, Ford, Laforza, Lincoln, Mercury, Omega, Shelby, Sunbeam, TVR, Each

Part Number: MAH-SS45399

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Cometic MLS Head Gaskets C5817-027

Head Gasket, MLS, 4.320 in. Bore, .027 in. Compressed Thickness, Chevy, Big Block, Each

Part Number: CGT-C5817-027

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Cometic MLS Head Gaskets C5248-045

Head Gasket, MLS, 4.165 in. Bore, .045 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5248-045

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Cometic MLS Head Gaskets C5512-060

Head Gasket, MLS, 4.060 in. Bore, .060 in. Compressed Thickness, Ford, Lincoln, Mercury, Each

Part Number: CGT-C5512-060

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Fel-Pro Valve Stem Seals SS 13364-1

Valve Stem Seals, Umbrella Type, Rubber, AC, DeTomaso, Ford, Griffith, Lincoln, Mercury, Omega, Shelby, Sunbeam, TVR, Set of 8

Part Number: FEL-SS133641

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Fel-Pro Valve Stem Seals SS 70014

Valve Stem Seals, Umbrella Type, Rubber, Bristol, Checker, Chrysler, Dodge, Plymouth, Jensen, Set of 16

Part Number: FEL-SS70014

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Cometic MLS Head Gaskets C5816-030

Head Gasket, Multi-Layer Steel, 4.320 in. Bore, 0.030 in. Compressed Thickness, Chevy, Big Block, Each

Part Number: CGT-C5816-030

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Cometic MLS Head Gaskets C5809-027

Head Gasket, 4.200 in. Bore, .027 in. Compressed Thickness, Oldsmobile, 330, 350, 400, 425, Each

Part Number: CGT-C5809-027

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Cometic MLS Head Gaskets C5460-027

Head Gasket, MLS, 4.350 in. Bore, .027 in. Compressed Thickness, Chrysler, Dodge, Plymouth, Each

Part Number: CGT-C5460-027

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Cometic MLS Head Gaskets C5329-027

Head Gasket, MLS, 4.375 in. Bore, .027 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5329-027

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Cometic MLS Head Gaskets C5666-023

Head Gasket, MLS, 4.400 in. Bore, .023 in. Compressed Thickness, Ford, Each

Part Number: CGT-C5666-023

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Howards Cams Posi-Stop Valve Stem Seals 93380

Valve Seal, 8mm x .500"

Part Number: HRS-93380

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Fel-Pro Valve Stem Seals SS 72823

Valve Stem Seals, Umbrella, Chevrolet, GMC, 6.0/7.0/7.4L, V8, Set of 16

Part Number: FEL-SS72823

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Cometic MLS Head Gaskets C5245-045

Head Gasket, MLS, 4.060 in. Bore, .045 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5245045

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Dart Valve Stem Seals 26000025

Valve Stem Seal, Positive Stop, Rubber, 0.344 in. Stem, Designed To Fit Dart S/S Cylinder Heads, Each

Part Number: DRT-26000025

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Cometic MLS Head Gaskets C5247-027

Head Gasket, MLS, 4.125 in. Bore, .027 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5247-027

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air