2003 GMC SIERRA 1500 HD Parts & Accessories

Delphi Fuel Injection Pressure Regulators FP10021

Fuel Pressure Regulator, OE Style, Maximum 55 psi, Returnless, Push-In Style Inlet Diameter 25mm, Non-Adjustable, Metal, GM, Hummer, Isuzu, Each

Part Number: DFP-FP10021

4.37 out of 5 stars ( 19 )

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ACDelco GM Genuine Parts Fuel Filters 19425658

Fuel Filters, GM Genuine Parts, Stock Style, Element, Black Steel Housing, 5.75 in. Overall Length, Buick, Cadillac, Chevrolet, GMC, Land Rover, Each

Part Number: ADO-GF952

3.0 out of 5 stars ( 2 )

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Trick Flow® Track Max® Underdrive Harmonic Dampers TFS-18012

Underdrive Harmonic Damper, 25% Underdrive, SFI 18.1, Chevrolet/GMC 4.8L/5.3L/6.0L Trucks/SUVs, Long Spacing, Each

Part Number: TFS-18012

4.27 out of 5 stars ( 11 )

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Fel-Pro Camshaft Thrust Plates ES 73115

Camshaft Thrust Plate, Solid Type, Steel, Includes Four Bolts, Chevy, Small Block LS, Each

Part Number: FEL-ES73115

Not Yet Reviewed

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Dorman OE Replacement Wheels 16x7

Wheel, Replacement, 16 in. x 7 in., Steel, Gray, 8 x 6 1/2 in. Bolt Circle, Ford, OEM F3UZ1015A and F8UZ1015BA, Each

Part Number: RNB-939-198

4.78 out of 5 stars ( 9 )

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ATI Replacement Hubs ATI916430M

Crank Hub, Internal Engine Balance, Single Key, Chevy, Small Block, 4.8L LS, 5.3L LS, 6.2L LS, Each

Part Number: ATI-916430M

5.0 out of 5 stars ( 4 )

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Motive Gear Ring and Pinion Sets GM10-373A GM 8.5 in. 3.73 Gears

Ring and Pinion-GM 8.5/8.625

Part Number: MGR-GM10-373A

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

Timken Wheel Bearing and Hub Assemblies SP580310

Wheel Hub and Bearing Assembly, Front, Chevy, GMC, Hummer, Each

Part Number: TMK-SP580310

4.63 out of 5 stars ( 19 )

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Earl's Performance Oil Cooler Adapters LS0013ERL

Oil Cooler Adapter, Right Angle, -10 AN Inlet, -10 AN Outlet, Billet Aluminum, Black Anodized, 212 Degree Thermostat, Hardware, Each

Part Number: EAR-LS0013ERL

4.67 out of 5 stars ( 3 )

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ATP Automatic Transmission Wiring Harnesses JE-22

Automatic Transmission Wiring Harnesses, Replacement, AM General, Aston Martin, Bentley, Cadillac, Chevrolet, GMC, Hummer, Jaguar, Rolls-Royce, Each

Part Number: ATP-JE-22

Not Yet Reviewed

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King HP-Series Rod Bearings CR 807HPNSTDX

Rod Bearings, HP-Series, Bi-metal, Silicon Aluminum, .001 in. Crankshaft Undersize, Large Journal, Chevy, Small Block, Set of 8

Part Number: KGB-CR807HPNSTDX

5.0 out of 5 stars ( 1 )

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TCI Transmission Pans 378000

TCI Transmission Pans 378000

Automatic Transmission Pan, Deep, Aluminum, Natural, GM, 700R4, 4L60E, Each

Part Number: TCI-378000

3.73 out of 5 stars ( 15 )

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K&N Inline Fuel Filters PF-1000

Fuel Filters, In-Line, Steel Housing, Black, Cellulose Filter, 4.28 in. Long, 2.13 in. OD, Cadillac, Chevy, GMC, Jaguar, Land Rover, Pontiac, Each

Part Number: KNN-PF-1000

4.5 out of 5 stars ( 40 )

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ACDelco Gold Tie Rod Ends 19460302

Tie Rod End, Inner, 45A1311, Gold/Prof., Clockwise 14mm Straight Male End, 12.36 in. Long, 18mm Male Stud End, Cadillac, Chevrolet, GMC, Hummer, Each

Part Number: ADO-45A1311

5.0 out of 5 stars ( 2 )

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Lokar Midnight Series Flexible Braided Stainless Transmission Dipsticks XTD-34L80TM

Transmission Dipstick, Braided Stainless Steel, Black Housing, Black Handle, Chevy, 4L80E, Each

Part Number: LOK-XTD-34L80TM

4.5 out of 5 stars ( 2 )

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Dorman Knock Sensor Wiring Harnesses 917-033

Knock Sensor Wiring Harness, OEM Replacement, Buick, Cadillac, Chevy, GMC, Pontiac, Each

Part Number: RNB-917-033

4.85 out of 5 stars ( 26 )

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Motive Gear Master Ring and Pinion Installation Kits R10RLMK

Ring and Pinion Installation Kit, Master Kit, GM 8.5 in.; Incl. Bearing Kit Plus Ring Gear Bolts/Pinion Shi

Part Number: MGR-R10RLMK

5.0 out of 5 stars ( 1 )

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Belltech Rear Shackle Kits 6403

Shackles, 3 in. Drop, 3.0 in. Wide Spring, Chevy, GMC, Pickup, Crew Cab, Pair

Part Number: BEL-6403

5.0 out of 5 stars ( 7 )

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ACDelco GM Genuine Parts Flywheel and Flexplate Spacers 12563532

Flexplate Spacer, Steel, Use When Installing Early GM Transmission to an LS Engine, Each

Part Number: ADO-12563532

4.0 out of 5 stars ( 2 )

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Motive Gear Ring and Pinion Sets GM9.5-342 GM 9.5 in. 3.42 Gears

Gear, Ring and Pinion, 3.42:1 Ratio, GM, 9.5 in., 14-Bolt, Truck, Set

Part Number: MGR-GM9-5-342

5.0 out of 5 stars ( 4 )

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Moog Problem Solver Control Arms CK620054

Control Arm, Steel, Black, Front Upper, Chevy, GMC, Hummer, Each

Part Number: MOG-CK620054

4.6 out of 5 stars ( 5 )

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ACDelco 30 Spline Differential Carriers GM 8.5/8.625 Inch 84554713

Differential, GM 8.5/8.625 in., Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Oldsmobile, Saab, Rear, Each

Part Number: ADO-84554713

5.0 out of 5 stars ( 2 )

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ACDelco Gold Remanufactured Alternators 88864285

Alternators and Generators, Professional Remanufactured Alternators, Delco AD244 Case Style, 12 V, 145 amps, Serpentine Pulley, Chevy, GMC, Hummer

Part Number: ADO-334-2529A

1.0 out of 5 stars ( 1 )

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Melling Stock Replacement Cam and Lifter Kits CL-MC1384

Camshaft and Lifter Kit, Hydraulic Roller, Chevy, LS, Kit

Part Number: MEL-CL-MC1384

Not Yet Reviewed

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PRW High Performance Mechanical Water Pumps 1434611

WATER PUMP

Part Number: PQX-1434611

Not Yet Reviewed

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2003 GMC SIERRA 1500 HD Parts and Accessories