2003 GMC SIERRA 1500 HD Parts & Accessories

Ironman All Country A/T Tires 245/75-16

Tire, All Country A/T, 245/75-16, Radial, 111 Load Index, T Speed Rating, Blackwall, Each

Part Number: IRN-91198

Not Yet Reviewed

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Yukon Gear & Axle U-Joints YUJ3022

U-Joints, Spicer 1310 To GM 3RL/S44/Mechanics 3/American Axle 1344, Steel, Each

Part Number: YGA-42013

5.0 out of 5 stars ( 1 )

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Motive Gear Ring and Pinion Sets GM9.5-373 GM 9.5 in. 3.73 Gears

Gear, Ring and Pinion, 3.73:1 Ratio, GM, 9.5 in., 14-Bolt, Truck, Set

Part Number: MGR-GM9-5-373

4.25 out of 5 stars ( 4 )

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Dorman Exhaust Manifold Mounting Hardware 03133

Exhaust Manifold Studs, Nuts, Front Flange, Buick, Cadillac, Oldsmobile, Chevy, GMC, Set of 6

Part Number: RNB-03133

3.64 out of 5 stars ( 25 )

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ACDelco Silver Steering Idler Arms 19460316

Idler Arm, Steering, Bracket, Replacement, Greasable, Cadillac, Chevrolet, GMC, Hummer, Truck, Each

Part Number: ADO-46C1123A

Not Yet Reviewed

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AP Exhaust OE Replacement Steel 3 Inch Muffler X504

Muffler, Xlerator Performance, Steel, Aluminized, Chevy, GMC, 6.0, 8.1L, Each

Part Number: APH-X504

3.0 out of 5 stars ( 1 )

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aFe Pro Dry S Air Filter Elements 31-10004

aFe Pro Dry S Air Filter Elements 31-10004

Air Filter, Pro Dry S, Synthetic, OE Replacement, Cadillac, Chevy, GMC, Pickup, SUV, Each

Part Number: AFE-31-10004

5.0 out of 5 stars ( 5 )

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Summit Racing™ Off-Road-8 Wheels 16x8

Wheel, Off-Road-8, 16 x 8 in., Aluminum, Polished, 4.5 in. Backspace, 8 x 165.1mm Bolt Pattern, Each

Part Number: SUM-56-6881P0

Not Yet Reviewed

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SCT Livewire Vision Performance Monitors 5015PWD

Computer Programmer, SCT Livewire Vision Performance Monitor, Hand-held, Each

Part Number: SCL-5015PWD

Not Yet Reviewed

Estimated Ship Date: Feb 19, 2026 if ordered today

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Estimated Ship Date: Feb 19, 2026 if ordered today

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SCT X4 Power Flash Programmers 7015

4.25 out of 5 stars ( 74 )

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Black Rock Series 997 Type 8 Matte Black Wheels 16x7

Wheel, Series 997 Type 8, 16 in. x 7 in., Steel, Matte Black, 8 x 6.50 in. Bolt Circle, 4.00 in. Backspace, Ea

Part Number: BRW-997678040

5.0 out of 5 stars ( 2 )

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Taylor Spiro-Pro Spark Plug Wire Sets 76646

Wire, Spiro-Pro, 8mm, Blue, Coil Pack, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Saab, Set of 8

Part Number: TAY-76646

4.75 out of 5 stars ( 4 )

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MechMan Elite Series Billet Alternators B8206370RD

Alternator, E Series, 12 V, 370 amps, Billet Aluminum, Red Anodized, Serpentine, Buick, Cadillac, Chevy, GMC, Hummer, Oldsmobile, Each

Part Number: MEH-B8206370RD

5.0 out of 5 stars ( 1 )

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Mevotech TTX Control Arms CTXMS20360

Control Arms, TTX, Stock Style, Steel, Bronze Zinc Coated, Front Upper, Chevy, GMC, Hummer, Each

Part Number: MEV-CTXMS20360

5.0 out of 5 stars ( 1 )

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Dynomax Super Turbo Steel 3 Inch Muffler 17673

Muffler, Super Turbo, 3 in. Inlet/3 in. Outlet, Steel, Aluminized Steel, Each

Part Number: WLK-17673

3.57 out of 5 stars ( 7 )

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Chevrolet Performance Oil Seals 12584922

Oil Seal, Rubber, 20.69mm Inner Diameter, 4.20mm Width, Buick, Chevy, GMC, Hummer, Pontiac, Each

Part Number: NAL-12584922

5.0 out of 5 stars ( 2 )

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Dorman Cabin Pressure Vents 59111

Door Jamb Louvers, Cabin Pressure Vent, Plastic, Black, Chevrolet, GMC, Each

Part Number: RNB-59111

5.0 out of 5 stars ( 1 )

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ACDelco Replacement Relays 13500114

Relay, Multi Purpose, High Power, General, 8386, Each

Part Number: ADO-13500114

5.0 out of 5 stars ( 1 )

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MaxTrac Suspension Leveling Kits 840713

Leveling Kit, Front, Torsion Key, 1-3 in., Chevrolet, GMC, Kit

Part Number: MXT-840713

Not Yet Reviewed

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McGard Wheel Locks 24019

Lug Nuts, Conical Seat, 14mm x 1.50 RH, Open End, Locking, Zinc Plated Steel, Set of 4

Part Number: MCG-24019

4.57 out of 5 stars ( 14 )

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Standard Motor Blue Streak Performance Race Spark Plug Wire Sets 10039

Spark Plug Wires, Blue Streak Performance Race, Assembled, Spiral Core, 9mm, Black, Set

Part Number: SMP-10039

4.5 out of 5 stars ( 8 )

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Taylor Street Thunder Spark Plug Wire Sets 51044

Spark Plug Wires, StreeThunder, Spiro-Wound, 8mm, Black, Straight Boots, Chevy, Small Block, Set

Part Number: TAY-51044

4.47 out of 5 stars ( 15 )

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Superlift Rear Block Kits 3825

Lift Blocks/U-Bolts, Cast Iron, 2 in. Lift, Rear, Chevy, GMC, Pickup, RWD/4WD, Kit

Part Number: SLF-3825

4.25 out of 5 stars ( 4 )

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Dorman Exhaust Manifold Gasket and Hardware Kits 57175

Exh. Repair Kit

Part Number: RNB-57175

Not Yet Reviewed

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Skyjacker Nitro Shocks N8036

Shock/Strut, Nitro 8000, Twin-Tube, Red Polyurethane Bushings, Includes Red Boot, Each

Part Number: SJA-N8036

4.5 out of 5 stars ( 12 )

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Dorman Engine Oil Dipstick Tubes 917-303

DIPSTICK TUBE

Part Number: RNB-917-303

2.92 out of 5 stars ( 13 )

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2003 GMC SIERRA 1500 HD Parts and Accessories