CHEVROLET K20 Engine Gaskets & Seals

Rear Main Seal, 1-Piece, Rubber, Chevy, Small Block, Each

Part Number: FEL-BS40520

4.0 out of 5 stars ( 8 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Head Gasket, Titan, Copper, 4.630 in. Bore, .050 in. Compressed Thickness, Chevrolet, Big Block MK IV, Each

Part Number: SCE-T136250

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Head Gasket, PermaTorque, 4.370 in. Bore, .042 in. Compressed Thickness, Chevy, GMC, Big Block, V8, Each

Part Number: FEL-502SD

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Head Gasket, Multi-Layer Steel, 4.320 in. Bore, 0.051 in. Compressed Thickness, Chevy, Big Block, Each

Part Number: CGT-C5816-051

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Head Gasket, MLS, 4.100 in. Bore, .027 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5246-027

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Oil Pump Gasket, Copper, Chevy, Big Block, Each

Part Number: SUM-111481

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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 ( 3 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Valve Cover Gaskets, Blue Rubber/Steel Core, 3/16 in. Thick, Perimeter Bolt, Small Block, Chevy, Pair

Part Number: PQX-4174841

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Head Gasket, MLS, 4.630 in. Bore, .040 in. Compressed Thickness, Chevy, Big Block, Each

Part Number: CGT-C5434-040

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Head Gasket, MLS, 4.540 in. Bore, .060 in. Compressed Thickness, Chevy, Big Block, Each

Part Number: CGT-C5330-060

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Head Gasket, MLS, 4.310 in. Bore, .060 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5432-060

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Head Gasket, Titan, Copper, 4.320 in. Bore, .043 in. Compressed Thickness, Chevrolet, Big Block MK IV, Each

Part Number: SCE-T133243

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Valve Cover Gaskets, AccuSeal E, Cork, Chevy, Small Block, Pair

Part Number: SCE-111076

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Gaskets, Manifold, Intake, AccuSeal Pro, 2.500 in. x 1.800 in. Port, .062 in. Thick, Chevy, Big Block, Set

Part Number: SCE-213115

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Head Gasket, MLS, 4.030 in. Bore, .080 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5399-080

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

• Free Shipping

Head Gasket, Titan, Copper, 4.630 in. Bore, .043 in. Compressed Thickness, Chevrolet, Big Block MK IV, Each

Part Number: SCE-P136243

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Head Gasket, Multi-layer Steel, 4.630 in. Bore, .030 in. Compressed Thickness, Chevy, Big Block, Each

Part Number: CGT-C5331-030

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Head Gasket, MLS, 4.200 in. Bore, .098 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5249-098

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

• Free Shipping

Transmission Seal, Rear, Rubber, Each

Part Number: ADO-9613S

4.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Gaskets, Head Set, Chevy, Mark IV, 396, 402, 427, 454, 1965-90, Oval Port, Set

Part Number: EDL-7363

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

• Free Shipping

Head Gasket, Multi-Layer Steel, 4.630 in. Bore, 0.051 in. Compressed Thickness, Chevy, 396, 402, 427, 454

Part Number: CGT-C5434-051

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Gasket, Cellulose/Nitrile, Water Neck, Chevy, Big/Small Block, V8, Each

Part Number: MRG-740C

4.2 out of 5 stars ( 15 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Gaskets, Manifold, Intake, Ultra-Seal, 2.550 in. x 1.850 in. Raised Port, .060 in. Thick, Chevy, Big Block, Set

Part Number: MRG-5817

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Head Gasket, MLS, 4.060 in. Bore, .120 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5245-120

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

• Free Shipping

Head Gasket, Titan, Copper, 4.630 in. Bore, .080 in. Compressed Thickness, Chevrolet, Big Block MK IV, Each

Part Number: SCE-P136280

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air