2003 GMC SIERRA 1500 HD - In Stock Filter Options - Vendor In Stock Filter Options Parts & Accessories

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 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

ATI Replacement Hubs ATI916430MK

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

Part Number: ATI-916430MK

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Energy Suspension Transmission Mounts 3.1171R

Energy Suspension Transmission Mounts 3.1171R

Bushing, Transmission Mount, Gold Iridited, Red, Cadillac, Chevy, GMC, Each

Part Number: ENS-3-1171R

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

KYB Gas-a-Just Shocks and Struts KG54340

Shock Absorber / Strut, Gas-a-Just, Monotube, Gas Charged, Each

Part Number: KYB-KG54340

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Dorman Brake Banjo Bolts 13940

Fitting, Brake Hose Bolt, Banjo, Steel, Zinc, 10mm x 1.5,, Each

Part Number: RNB-13940

4.75 out of 5 stars ( 12 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

MSD Blaster OEM Replacement Coils 8264

Ignition Coil, Blaster OEM Replacement, Buick, Cadillac, Chevy, GMC, Hummer, 4.8, 5.3, 6.0, 8.1L, Each

Part Number: MSD-8264

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Summit Racing™ Idle Air Control Valve and Throttle Position Sensor Bolt Kits SUM-921100

Replacement Component, IAC/TPS Mounting Hardware, Stainless, GM LS Engines, Each

Part Number: SUM-921100

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

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 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

KYB Gas-a-Just Shocks and Struts KG54342

Shock Absorber / Strut, Gas-a-Just, Monotube, Gas Charged, Each

Part Number: KYB-KG54342

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Dorman Exhaust Manifold Mounting Hardware 03413B

Exhaust Manifold Bolts, Steel, Zinc Plated, Cadillac, Chevy, GMC, Chrysler, Dodge, Isuzu, Jeep, Set of 12

Part Number: RNB-03413B

4.59 out of 5 stars ( 27 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

ACDelco Transmission Solenoids 19139322

Transmission Solenoids, TCC/Lock-up Solenoid, GM, Each

Part Number: ADO-214-1892

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Dee Zee Hex Cast Side Step Bars DZ66321CTB

Step Bars, Aluminum, Black Textured Powdercoated, Crew Cab, Pair

Part Number: DZZ-DZ66321CTB

Not Yet Reviewed

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Eddie Motorsports Smooth Billet Coil Covers MS109-02MB

Ignition Coil Covers, Smooth, Billet Aluminum, Matte Black Powdercoated, Chevy, Pontiac, Small Block LS, Pair

Part Number: EMS-MS109-02MB

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Mar 16, 2026 if ordered today

...Loading

Estimated Ship Date: Mar 16, 2026 if ordered today

Summit Racing™ Spark Plug Boot Heat Shields SUM-889505BK

Heat Protection, Spark Plug Boot Heat Shields, Heat Resistant Polyimide Film Insert, Straight, Aluminum, Black, 2 3/8 in. Long, LS/LT, Set of 8

Part Number: SUM-889505BK

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Spicer Drivetrain Products Differential Cover Performance Gaskets RD51999

Differential Gasket, Composite/Steel Core, Dana 60, Each

Part Number: SDH-RD51999

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

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 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

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

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Sherman Quarter Panels SHE901-59L

Quarter Panel Patch, Steel, EDP Coated, Driver Side, Wheel Arch, Chevy, GMC, Each

Part Number: SHI-901-59L

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

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 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

ACDelco Automatic Transmission Shift Shaft Seals 19340257

Automatic Transmission Shift Shaft Seal, Nitrile, Buick, Cadillac, Chevy, Each

Part Number: ADO-8792S

1.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

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 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

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 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

King HP-Series Cam Bearings CS5172HP

Cam Bearings, Alecular Silicon, Chevy LS, Dart LS Next Block, Kit

Part Number: KGB-CS5172HP

Not Yet Reviewed

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

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 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

FAST XR Series Ignition Coils 30387-8

Ignition Coils, XR Series, Black, 50,000 Volts Max, V8, Round Truck Style, LS, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Set of 8

Part Number: FST-30387-8

Not Yet Reviewed

Estimated Ship Date: Apr 9, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 9, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Summit Racing™ High-Output Ignition Coils SUM-850501-1B

Not Yet Reviewed

Estimated Ship Date: Today

...Loading

2003 GMC SIERRA 1500 HD Parts and Accessories