2003 GMC SIERRA 1500 Engine Gaskets & Seals Gaskets & Seals

Enginetech Full Gasket Sets C325K-1

Engine Gasket Set, Full Gasket Set, for 3.780 in./96mm Cylinder Bore, Chevy, 4.8L, 5.3L, Kit

Part Number: EGN-C325K-1

Not Yet Reviewed

Estimated Ship Date: May 22, 2026 if ordered today

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Estimated Ship Date: May 22, 2026 if ordered today

Mahle Original Valve Stem Seals SS45921

Valve Stem Seal, Metal with Molded Rubber, Hat Style, GM. LS Engine, Set of 8

Part Number: MAH-SS45921

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Estimated Ship Date: Tomorrow

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Fel-Pro Intake Manifold Gaskets MS 95817-1

Intake Manifold Gaskets, Stock Port, Printoseal, Chevy, 4.3L, V6, Pair

Part Number: FEL-MS958171

5.0 out of 5 stars ( 3 )

Cannot be shipped Internationally

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Cannot be shipped Internationally

Cometic MLS Head Gaskets C5475-070

Cometic MLS Head Gaskets C5475-070

.070" MLS-5 HEAD GASKET

Part Number: CGT-C5475-070

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Estimated Ship Date: Tomorrow

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Cometic MLX Head Gaskets C5505-066

Head Gasket, MLX, 4.040 in. Bore, .066 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5505-066

Not Yet Reviewed

Estimated Ship Date: Jul 13, 2026 if ordered today

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Estimated Ship Date: Jul 13, 2026 if ordered today

Fel-Pro Water Pump Gaskets 13032

Gasket, Water Pump to Plate, Paper, Checker/Chevy, Small Block/V6, Each

Part Number: FEL-13032

3.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Mahle Original Valve Stem Seals SS45920

Valve Stem Seals, Positive Stop, Rubber, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Saab, Pontiac, Set of 8

Part Number: MAH-SS45920

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ACDelco GM Genuine Parts Distributor Housing Gaskets 10108445

Distributor Base Gaskets, Genuine Parts Distributor Housing Gaskets, Reinforced Cellulose, Cadillac, Chevrolet, GMC, Oldsmobile, Pontiac, Each

Part Number: ADO-10108445

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Cometic MLS Head Gaskets C5475-080

.080" MLS-5 HEAD GASKET

Part Number: CGT-C5475-080

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Fel-Pro Head Gaskets 510 SD

Head Gasket, PermaTorque Severe Duty, 4.125 in. Bore, 0.041 in. Compressed Thickness, Pontiac, Isuzu, Oldsmobile, Chevy, GMC, Each

Part Number: FEL-510SD

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Cometic MLS Head Gaskets C5475-098

.098" MLS-5 HEAD GASKET

Part Number: CGT-C5475-098

Not Yet Reviewed

Estimated Ship Date: Jul 13, 2026 if ordered today

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Estimated Ship Date: Jul 13, 2026 if ordered today

Cometic MLS Head Gaskets C15361-036

GM LS1/LS2/LS3/LS6 Gen-3/4 Small Block V8 .036" MLS Cylinder Head Gasket, 3.810" Bore

Part Number: CGT-C15361-036

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Cometic Head Gaskets C15508-051

.051" MLS 1/2" STUDS HEAD GSKT

Part Number: CGT-C15508-051

Not Yet Reviewed

Estimated Ship Date: Jul 13, 2026 if ordered today

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Estimated Ship Date: Jul 13, 2026 if ordered today

Fel-Pro Oil Cooler Mounting Gaskets and Seals 72462

Oil Cooler Gaskets, Gasket, Each

Part Number: FEL-72462

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Fel-Pro Intake Manifold Gaskets MS 95817

Gaskets, Manifold, Intake, Stock Port, Chevy, 4.3L, V6, Set

Part Number: FEL-MS95817

4.14 out of 5 stars ( 7 )

Estimated Ship Date: Tomorrow

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Enginetech Engine Valve Stem Oil Seals S2926-20

Engine Valve Stem Oil Seal 55-14 AMC/BUI/CAD/CHV/FRD/GM/GMC/IZU/JEP/LIN/MER/MKR/OLD/PON

Part Number: EGN-S2926-20

Not Yet Reviewed

Estimated Ship Date: May 22, 2026 if ordered today

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Estimated Ship Date: May 22, 2026 if ordered today

Cometic MLS Head Gaskets C5318-056

Head Gasket, MLS, 4.160 in. Bore, .056 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5318-056

Not Yet Reviewed

Estimated Ship Date: Jul 13, 2026 if ordered today

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Estimated Ship Date: Jul 13, 2026 if ordered today

Fel-Pro Intake Plenum Gasket Sets MS 95816

Plenum Gasket Set

Part Number: FEL-MS95816

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Cometic MLS Head Gaskets C5751-098

Head Gasket, MLS, 4.060 in. Bore, .098 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5751-098

Not Yet Reviewed

Estimated Ship Date: Jul 13, 2026 if ordered today

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Estimated Ship Date: Jul 13, 2026 if ordered today

ACDelco GM Genuine Parts Cylinder Head Gaskets 12552362

Head Gasket, Graphite/Steel, 4.110 in. Bore, 0.030 in. Thickness, Chevy, GMC, Each

Part Number: ADO-12552362

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Cometic MLS Head Gaskets C5317-060

Head Gasket, MLS, 4.130 in. Bore, .060 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5317-060

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Cometic MLX Head Gaskets C5014-040

.040" MLX HEAD GASKET

Part Number: CGT-C5014-040

Not Yet Reviewed

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ACDelco Crankshaft Front Seals 19340212

Timing Cover Seals, ACDelco Crankshaft Front Seals, Multi-Purpose Seal, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Oldsmobile, Saab, Each

Part Number: ADO-4762N

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Cometic MLS Head Gaskets C5477-098

Head Gasket, MLS, Multi-layer Stainless Steel, 4.000 in. Bore, 0.098 in. Compressed Thickness, Chevrolet, LS, Each

Part Number: CGT-C5477-098

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Fel-Pro Water Neck Gaskets 35710

Gasket, Composite, Water Outlet, Chevy, Small Block V8/V6/6.5L Diesel, Each

Part Number: FEL-35710

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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