2004 GMC SIERRA 2500 HD Engine Gaskets & Seals Gaskets & Seals

Fel-Pro Oil Pump Gaskets 72401

Oil Pump Gasket, O-Ring, Rubber, Each

Part Number: FEL-72401

4.69 out of 5 stars ( 13 )

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Mahle Original Cylinder Head Gaskets 54582

Head Gasket, Multi-Layer Steel, GM, Duramax 6.6L Engine, Each

Part Number: MAH-54582

1.0 out of 5 stars ( 1 )

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Mr. Gasket Valve Cover Gaskets 61040G

Valve Cover Gaskets, Molded Rubber Compound, Chevrolet, GMC, Chevrolet Small Block LS, Pair

Part Number: MRG-61040G

5.0 out of 5 stars ( 1 )

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Dorman Coolant Bypass Seals 56390

Coolant Bypass Seals, Rubber/Steel, LS GEN III/IV, Buick, Cadillac, Chevy, GMC, Hummer, Pontiac, Set of 4

Part Number: RNB-56390

4.75 out of 5 stars ( 8 )

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Cometic Valve Cover Gaskets C5170

Cometic Valve Cover Gaskets C5170

Valve Cover Gasket, Molded Rubber Compound, Cadillac, Chevrolet, GMC, Pontiac, LS Engine, Each

Part Number: CGT-C5170

5.0 out of 5 stars ( 2 )

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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 )

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Fel-Pro Water Pump Gaskets ES73010

Water Pump Gaskets, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Pontiac, Saab, Pair

Part Number: FEL-ES73010

5.0 out of 5 stars ( 2 )

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Fel-Pro Conversion Set Gaskets CS 26168

Gaskets, Conversion Set, Chevy, GMC, 8.1L, Set

Part Number: FEL-CS26168

Not Yet Reviewed

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Fel-Pro Oil Pan Drain Plug Gaskets 70820

Drain Plug Gasket, AM General, Buick, Chevy, GMC, Isuzu, Oldsmobile, Pontiac. Saab, Saturn, Workhorse, Each

Part Number: FEL-70820

4.75 out of 5 stars ( 4 )

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Fel-Pro Head Gasket Sets HSU 26269-1

Engine Gaskets, Head Set, Chevy, GMC, Hummer, 6.6L, Set

Part Number: FEL-HSU262691

5.0 out of 5 stars ( 3 )

Estimated Ship Date: May 27, 2026 if ordered today

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Estimated Ship Date: May 27, 2026 if ordered today

Chevrolet Performance Oil Cooler Block-Off Gaskets 12611384

Oil Cooler Block Off Plate Gasket, GM, LS, Each

Part Number: NAL-12611384

3.0 out of 5 stars ( 2 )

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Mr. Gasket Valley Cover Gaskets 61020G

Engine Valley Cover Gasket, Rubber/Aluminum, Chevy, Small Block, Gen III/IV, Each

Part Number: MRG-61020G

5.0 out of 5 stars ( 1 )

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Fel-Pro Head Gaskets 26169 PT

Head Gasket, PermaTorque, 4.330 in. Bore, Chevy, GMC, 8.1L, Right Side Cylinder Head, Each

Part Number: FEL-26169PT

Not Yet Reviewed

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Fel-Pro Oil Cooler Mounting Gaskets and Seals 72435

Oil Cooler Gaskets, Gasket, Each

Part Number: FEL-72435

Not Yet Reviewed

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BTR Water Crossover Seals BTR51933

Seal, Water Crossover Seal, Rubber/Steel, Chevrolet, Each

Part Number: BTC-BTR51933

Not Yet Reviewed

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Cometic Valve Stem Seals 3516P-16

Valve Stem Seals, Positive Stop, 0.492 in. Guide, 0.616 in. Valve Stem, Blue Seal, Metal Jacket Style Seals, Set of 16

Part Number: CGT-3516P-16

5.0 out of 5 stars ( 3 )

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Fel-Pro Performance Timing Cover Gaskets TCS 46007

Timing Cover Gasket Set

Part Number: FEL-TCS46007

Not Yet Reviewed

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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

Not Yet Reviewed

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Fel-Pro Oil Pan Gaskets OS 30714 R

Oil Pan Gasket Set

Part Number: FEL-OS30714R

Not Yet Reviewed

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Cometic MLS Head Gaskets C5764-040

.040" MLS- LH SIDE HEAD GASKET

Part Number: CGT-C5764-040

Not Yet Reviewed

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Cometic MLS Head Gaskets C5761-040

.040" MLS- RH SIDE HEAD GASKET

Part Number: CGT-C5761-040

1.0 out of 5 stars ( 1 )

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ACDelco Water Neck and Thermostat Housing Seals 12570307

Water Neck Gaskets and O-Rings, Water Neck and Thermostat Housing Seals, EPDM Rubber, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Pontiac, Saab, Each

Part Number: ADO-131-169

4.0 out of 5 stars ( 1 )

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Fel-Pro Head Gaskets 26168 PT

Head Gasket, PermaTorque, 4.330 in. Gasket Bore, Chevy, GMC, 8.1L, Left Side Cylinder Head, Each

Part Number: FEL-26168PT

Not Yet Reviewed

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Fel-Pro Rear Main Seals BS 40673

Rear Main Seal, 1-Piece, Rubber, Chevy, GMC, Each

Part Number: FEL-BS40673

Not Yet Reviewed

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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

Not Yet Reviewed

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