GMC SIERRA 2500 ACDelco Gaskets & Seals

Oil Pan Gasket, One-piece, Silicone/Aluminum, Chevy, Small Block LS, Each

Part Number: ADO-12612350

5.0 out of 5 stars ( 4 )

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

Exhaust Gaskets, Exhaust Manifold, Chevy, Pontiac, 5.7L, LS, Each

Part Number: ADO-12617944

4.67 out of 5 stars ( 12 )

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

Timing Cover Seal, Chevy, Small Block LS, Each

Part Number: ADO-296-02

4.82 out of 5 stars ( 28 )

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

Rear Main Seal Housing, LS Engine Crankshaft Rear Seal Housing, Aluminum, Includes Seal and Gasket, Will not fit LSX, Each

Part Number: ADO-12639250

4.0 out of 5 stars ( 8 )

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

Water Pump Gasket, GM Genuine Part, Rubber/Steel Core, Requires 2 Gaskets Per Engine, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Pontiac, Saab, Each

Part Number: ADO-251-663

4.79 out of 5 stars ( 19 )

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

Intake Manifold Gaskets, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Saab, Pair

Part Number: ADO-89060413

5.0 out of 5 stars ( 6 )

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

Transmission Pan Gaskets, GM OE, Chevrolet, GMC, Each

Part Number: ADO-8677743

5.0 out of 5 stars ( 4 )

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

Rear Main Seal Cover Gasket, Rubber/Aluminum, Chevy, 4.8L, 5.3L, 5.7L, 6.0L, Each

Part Number: ADO-12639249

Not Yet Reviewed

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

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

Automatic Transmission Torque Converter Seal, Rubber, Buick, Pontiac, Each

Part Number: ADO-24202535

5.0 out of 5 stars ( 7 )

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

Transmission Seal, Rear, Buick, Cadillac, Chevrolet, GMC, Isuzu, Oldsmobile, Saab, Each

Part Number: ADO-24232325

5.0 out of 5 stars ( 1 )

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

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 )

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

Transmission Rear Seals, Automatic Output Shaft Seal, Replacement, Rubber, GM, 4L60/4L65/4L70/700R4/MD8/TH350C/TH400, Each

Part Number: ADO-3764601

1.0 out of 5 stars ( 1 )

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

O-Ring, Fuel Injector Feed and Return Pipe O-Ring, Rubber, Buick, Cadillac, Chevy, GMC, Hummer, Oldsmobile, Pontiac, Each

Part Number: ADO-217-452

3.67 out of 5 stars ( 3 )

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

Automatic Transmission Torque Converter Seal, Rubber, Chevrolet, GMC, Pontiac, Each

Part Number: ADO-24209839

Not Yet Reviewed

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

Pinion Seal, Steel with Rubber Inner, GM 8.5, GM 8.6, 10-Bolt, Each

Part Number: ADO-26064029

1.0 out of 5 stars ( 1 )

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

O-Ring, Universal, Each

Part Number: ADO-24100002

Not Yet Reviewed

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

Automatic Transmission Oil Rings, Turbine Shaft Seals, PTFE®, Chevrolet, THM700-R4, 4L60, MD8, 4L65E, 4L70E, Each

Part Number: ADO-8667035

Not Yet Reviewed

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

Water Pump Gaskets, EPDM Rubber, Chevrolet, GMC, Each

Part Number: ADO-251-2031

5.0 out of 5 stars ( 1 )

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

Automatic Transmission Oil Pump Seal, Chevrolet, GMC, Each

Part Number: ADO-8661602

Not Yet Reviewed

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

Transmission Output Shaft Seal, Chevy, GMC, Cadillac, Each

Part Number: ADO-8675517

Not Yet Reviewed

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

Timing Cover Seals, ACDelco Crankshaft Front Seals, Multi-Purpose Oil Seal, Chevy, GMC, Each

Part Number: ADO-710568

Not Yet Reviewed

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

Multi Purpose Seal, Air Conditioning Seal

Part Number: ADO-13579648

Not Yet Reviewed

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

Automatic Transmission Servo Sealing Rings, Low and Reverse Band Servo Piston Seal, Chevrolet, THM-R2, TH475, TH400, MT1, MN8, M40, 4L85E, 4L80E, Each

Part Number: ADO-8623430

Not Yet Reviewed

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

Transfer Case Input Shaft Seal, 2.683 in. Bore, 2.700 in. O.D., 0.512 in. Width, Cadillac, Chevy, GMC, NP149/NP246, Each

Part Number: ADO-12547466

Not Yet Reviewed

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