2003 GMC SIERRA 1500 HD Engines & Components - In Stock Filter Options - Vendor In Stock Filter Options

King SI-Series Rod Bearings CR 865SI 020

Rod Bearings, .020 in Crankshaft Undersize, Bi-metal, Silicon Aluminum, Set of 8

Part Number: KGB-CR865SI020

Not Yet Reviewed

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Derale Engine Oil Filter Relocation Kits 15716

Oil Filter Relocation Kit, Single Filter, 3/4-16 in. Filter Threads, 13/16-16 in. Engine Threads, Kit

Part Number: DER-15716

1.0 out of 5 stars ( 1 )

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ATP Graywerks Harmonic Balancers 102171

Harmonic Balancer, Internal Balance, Nodular Iron, Buick, Cadillac, Chevy, GMC/Hummer/Isuzu, Small Block, Each

Part Number: ATP-102171

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

K&N Select Oil Filters SO-1007

Oil Filter, Select, Canister, Black, 13/16 in.-16 Thread, 3.11 in. Tall, 2.98 in. Diameter, Anti-Drainback, Each

Part Number: KNN-SO-1007

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Fram HP Series Oil Filters FHP20

Fram HP Series Oil Filters FHP20

Oil Filter, HP Series, Canister, 13/16-16 in. Thread Size, Each

Part Number: FRM-HP20

5.0 out of 5 stars ( 1 )

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Hastings Piston Ring Sets 4860030

Piston Rings, Phosphate Coated, 4.030 in. Bore, 1.5mm, 1.5mm, 3.0mm Thickness, 8-Cylinder, Set

Part Number: HSN-4860030

Not Yet Reviewed

Estimated Ship Date: Feb 20, 2026 if ordered today

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Estimated Ship Date: Feb 20, 2026 if ordered today

Hastings Premium Ductile Ring Sets 2M4860S005

Engine Piston Ring Set, Single Cyl Ring Set; Plasma Moly

Part Number: HSN-2M4860S005

Not Yet Reviewed

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Dorman Oil Filler Tubes 917-420

Engine Oil Filler Tube, Plastic, Black, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Each

Part Number: RNB-917-420

4.2 out of 5 stars ( 5 )

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Dorman Oil Pan Drain Plugs 65416

Oil Drain Pan Plugs, Plug, Thread Size 12mm x 1.75, Each

Part Number: RNB-65416

5.0 out of 5 stars ( 1 )

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King SI-Series Main Bearings MB5398SI

Main Bearings, King SI-Series Main Bearings, Stock Size, Bi-Metal, Holden, Sold as a Set of 5

Part Number: KGB-MB5398SI

Not Yet Reviewed

Estimated Ship Date: May 1, 2026 if ordered today

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Estimated Ship Date: May 1, 2026 if ordered today

Continental Accessory Drive Belt Kits K49276

Accessory Drive Belt Kit, 4 Groove Belt, Tensioner, Kit

Part Number: CEL-K49276

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

Melling Valves V1935S

Valves, Exhaust, 1.551 in. Diameter, .313 in. Stem, 4.923 in. Length, Chevy, Each

Part Number: MEL-V1935S

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Fram Tough Guard Oil Filters TG3506

Oil Filter, Tough Guard, 13/16 in.-16 Thread, ONE

Part Number: FRM-TG3506

5.0 out of 5 stars ( 1 )

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Hastings Piston Ring Sets 2M4860060

Piston Rings, Plasma-moly, 4.059 in. Bore, 1.5mm, 1.5mm, 3.0mm Thickness, 8-Cylinder, Set

Part Number: HSN-2M4860060

Not Yet Reviewed

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Cloyes Hex-A-Just Timing Sets 9-3159AZ

Engine Timing Set, High Performance Timing Set

Part Number: CLO-9-3159AZ

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

Hayden Idler Pulleys 5975

Idler Pulley, Serpentine, Steel, Black, for use on Acura®, GM, Ford, Jaguar, Each

Part Number: HDA-5975

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Earl's Performance Cylinder Head Bolt Kits TBS-001ERL

Cylinder Head Fasteners, Cylinder Head Bolt Kits, 12-point Head, Chromoly, Black, Flat Washers, Chevrolet, 4.8L LS, 5.3L LS, 5.7L LS, 6.0L LS, Kit

Part Number: EAR-TBS-001ERL

Not Yet Reviewed

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Mahle Original Oil Filters OC 999

Oil Filter, Canister, Buick, Cadillac, Chevrolet, GMC, Isuzu, Oldsmobile, Pontiac, Each

Part Number: MAH-OC999

Not Yet Reviewed

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ACDelco GM Genuine Parts Brake Master Cylinder Caps 22795538

Master Cylinder Reservoir Caps, ACDelco GM Genuine Parts Brake Master Cylinder Caps, Black, Cadillac, Chevrolet, GMC, Pontiac, Saturn, Suzuki, Each

Part Number: ADO-22795538

5.0 out of 5 stars ( 1 )

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Sealed Power Stock Replacement Oil Pumps 224-43645

Oil Pump, OEM Replacement, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Pontiac, Saab, Each

Part Number: SLP-224-43645

Not Yet Reviewed

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Cloyes Replacement Timing Chains 9-132

Replacement Timing Chain, True Roller, AMC 290-401, Chain Only, Each

Part Number: CLO-9-132

Not Yet Reviewed

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

Pioneer Automotive Timing Covers 500323RSH

TIMING COVER

Part Number: PIO-500323RSH

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

Continental Accu-Drive Tensioners 49275

Belt Tensioner, Accu-Drive, Chevy, GMC, Hummer, Isuzu, Pickup, SUV, Van, Each

Part Number: CEL-49275

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Dayco No Slack Tensioner Pulleys 89009

4.25 out of 5 stars ( 7 )

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King SI-Series Rod Bearings CR 807SI 050

Rod Bearings, .050 in Crankshaft Undersize, Bi-metal, Silicon Aluminum, Large Journal, Chevy, Small Block, Set of 8

Part Number: KGB-CR807SI050

Not Yet Reviewed

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Sealed Power A-Series Rod Bearings 2555A 30

Rod Bearing, 0.030 in. Crankshaft Undersize, Bi Metal, AM General, Avanti, Buick, Chevy, GMC, Hummer, Oldsmobile, L6, V8

Part Number: SLP-2555A30

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