GMC SIERRA 2500 HD Gaskets & Seals

Gasket, Engine Oil Pressure Relief Valve Gasket, GASKET,OIL PRESS RLF VLV (BACK OF FRONT COVER)

Part Number: ADO-94011695

Not Yet Reviewed

Estimated Ship Date: Dec 18, 2025 if ordered today

• $20 Summit Bucks
• Special Order

Turbocharger Oil Line Gasket

Part Number: ADO-12637218

Not Yet Reviewed

Estimated Ship Date: Jan 2, 2026 if ordered today

• $20 Summit Bucks
• Special Order

Engine Valve Stem Oil Seal Set, Engine Valve Stem Oil Seal Set, SEAL KIT,EXH VLV STEM OIL

Part Number: ADO-12457652

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

• $20 Summit Bucks
• Special Order

Valve Cover Gaskets, ACDelco GM Genuine Parts Valve Cover Gaskets, One Piece, Lower Valve Cover Gasket, Chevy, GMC, Each

Part Number: ADO-97321295

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

• $20 Summit Bucks
• Special Order

EGR Gasket

Part Number: FEL-73209

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

• $20 Summit Bucks
• Special Order

SEAL-ENG OIL CLR-(OIL COOER CASE HALF SEAL)

Part Number: ADO-97358847

Not Yet Reviewed

Estimated Ship Date: Dec 31, 2025 if ordered today

• $20 Summit Bucks
• Special Order

Engine Gasket Set

Part Number: FEL-260-3199

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

• Free Shipping
• $20 Summit Bucks
• Special Order

Timing Cover Seals, GM Genuine Parts, Cadillac, Chevrolet, GMC, Hummer, Each

Part Number: ADO-12594339

Not Yet Reviewed

Estimated Ship Date: Jan 2, 2026 if ordered today

• $20 Summit Bucks
• Special Order

RETAINER,CR/SHF FRT OIL SEAL

Part Number: ADO-710536

Not Yet Reviewed

Estimated Ship Date: Jan 2, 2026 if ordered today

• $20 Summit Bucks
• Special Order

SEAL,A/TRNS FLUID PUMP (O RING)

Part Number: ADO-29537620

Not Yet Reviewed

Estimated Ship Date: Jan 2, 2026 if ordered today

• $20 Summit Bucks
• Special Order

Head Gasket, GM OE, 4.330 in. Bore, 0.056 in. Compressed Thickness, Graphite/Steel, Chevy, GMC, Each

Part Number: ADO-12558164

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

• $20 Summit Bucks
• Special Order

Head Gasket, GM OE, 4.180 in. Bore, Multi-Layer Steel, Chevy, GMC, Each

Part Number: ADO-98040128

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

• $20 Summit Bucks
• Special Order

Head Gasket, GM OE, 4.180 in. Bore, Multi-Layer Steel, Chevy, GMC, Each

Part Number: ADO-98040130

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

• Free Shipping
• $20 Summit Bucks
• Special Order

GASKET-CYL HD

Part Number: ADO-12727485

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

• $20 Summit Bucks
• Special Order

GASKET-CYL HD

Part Number: ADO-12727484

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

• $20 Summit Bucks
• Special Order

GASKET-CYL HD

Part Number: ADO-12727486

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

• $20 Summit Bucks
• Special Order

GASKET-EGR VLV CLR

Part Number: ADO-98065521

Not Yet Reviewed

Estimated Ship Date: Dec 18, 2025 if ordered today

• $20 Summit Bucks
• Special Order

HOUSING ASM-CR/SHF RR OIL SEAL

Part Number: ADO-12705664

Not Yet Reviewed

Estimated Ship Date: Dec 18, 2025 if ordered today

• $20 Summit Bucks
• Special Order

GASKET-CTLTC CONV

Part Number: ADO-12672821

Not Yet Reviewed

Estimated Ship Date: Dec 18, 2025 if ordered today

• $20 Summit Bucks
• Special Order

Intake Manifold Tube Gasket, Upper, Rectangular-shape, Chevy, GMC, 6.6L Diesel, Each

Part Number: ADO-97251963

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

• $20 Summit Bucks
• Special Order

Intake Manifold Tube Gasket, Chevy, GMC, 6.6L Diesel, Each

Part Number: ADO-97302368

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

• $20 Summit Bucks
• Special Order

Flywheel Housing Gasket ,Flywheel Housing Cover Gasket

Part Number: ADO-97229043

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

• $20 Summit Bucks
• Special Order

Gasket, EGR Tube Gasket, Stock Replacement, Chevrolet, GMC, Heavy Duty, Truck, Van

Part Number: ADO-219-331

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

• $20 Summit Bucks
• Special Order

Throttle Body Gasket, Mounting Gasket, Steel, Chevrolet, GMC, Each

Part Number: ADO-219-624

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

• $20 Summit Bucks
• Special Order

Turbocharger Coolant Line Gasket

Part Number: ADO-12662187

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

• $20 Summit Bucks
• Special Order