2003 GMC SIERRA 1500 Summit Racing Parts and Accessories

Brake Rotors, Cross-Drilled/Slotted, Iron, Zinc Dichromate Plated, Front, Cadillac, Chevy, GMC, Pair

Part Number: SUM-BRC-66040PR

Not Yet Reviewed

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

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Spark Plug Wires, Race Series, 8.5mm, Black, 50 Ohm, 9" Leads, OEM Spark Plug Boots That Accept Heat Shields, LS, V8, Set

Part Number: SUM-887828

4.48 out of 5 stars ( 29 )

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

Spark Plug Wires, Street / Strip Series, 8mm, 300 Ohm, Blue, 12" Leads, OEM Spark Plug Boots That Accept Heat Shields, LS, V8, Set

Part Number: SUM-867830

4.75 out of 5 stars ( 36 )

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

Ignition Tune-Up Kit, Chevy, GMC, Truck, Van, SUV, 4.3L V6, Kit

Part Number: SUM-867650CR

4.5 out of 5 stars ( 10 )

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

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Exhaust Manifold and Header Gaskets, Multi-Layer Steel, Round Port, Chevrolet, GM, LS, Includes EGR and Air Injection Gaskets, Set

Part Number: SUM-110445

5.0 out of 5 stars ( 1 )

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

Radiator, Exact Fit, Aluminum, Plastic, Cadillac, Chevy, GMC, 4.8L, 5.3L, Each

Part Number: SUM-380545

4.2 out of 5 stars ( 5 )

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

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Cab Visor, Sportvisor, Fiberglass, White Gelcoat, Chevy, GMC, Pickup, Each

Part Number: SUM-480001

4.94 out of 5 stars ( 16 )

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

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Step Bars, Stainless Steel, Polished, Round, 3 in. Diameter, Standard Cab, Chevy, GMC, Pair

Part Number: SUM-710103-SS

5.0 out of 5 stars ( 2 )

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

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Thermostat, 187 Degree, WithThermostat Housing, Copper/Brass, Stainless Body, GM, Each

Part Number: SUM-367-187

5.0 out of 5 stars ( 3 )

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

Exhaust Flange, LS Truck Manifold Steel, 2.5 in. Pipe Diameter, Natural, Pair, GM 5.3 6.0 6.2 LQ4 LQ9 LM7

Part Number: SUM-680500

4.33 out of 5 stars ( 6 )

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

Spark Plug Wires, Street / Strip Series, 8mm, 300 Ohm, Blue, Chevy / GMC, Vortec Flat Cap, 4.3L, V6, Set

Part Number: SUM-867650

4.5 out of 5 stars ( 26 )

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

Combo, Differential, Eaton Truetrac, Ring and Pinion, 4.56:1 Ratio, Install Kit, 30 Spline, Rear, GM 8.5 in./8.6, Kit

Part Number: CMB-14-0084

Not Yet Reviewed

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

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Combo, Differential, Eaton Truetrac, Ring and Pinion, 4.10:1 Ratio, Install Kit, 30 Spline, Rear, GM 8.5 in./8.6, Kit

Part Number: CMB-14-0082

Not Yet Reviewed

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

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Step Bars, Oval, Stainless Steel, Polished, 4 in. Diameter, Standard Cab, Chevy, GMC, Pair

Part Number: SUM-710203-SS

4.0 out of 5 stars ( 2 )

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

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Brake Rotors, 13 Inch, Cross-Drilled/Slotted, Iron, Zinc Dichromate Plated, Rear, Cadillac, Chevy, GMC, Pair

Part Number: SUM-BRC-66045PR

Not Yet Reviewed

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

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Universal Joint, Spicer 1350 Style, Greasable, Steel, Each

Part Number: SUM-732002

3.17 out of 5 stars ( 6 )

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

Timing Chain and Gear Set, Double Roller, Billet, 3 Bolt, 1 Cam Sensor, Adjustable, Chevrolet, LS, Set

Part Number: SUM-G6646-BA

1.0 out of 5 stars ( 1 )

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

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Tonneau Cover, Soft Folding, Vinyl, Black, Above the Bed Rails, 6 1/2 Ft, Bed, Chevy, GMC, Each

Part Number: SUM-484917

4.5 out of 5 stars ( 2 )

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

• Oversize $46.99

Brake Rotors, 12.75 in. Cross-Drilled/Slotted, Iron, Zinc Dichromate Plated, Rear, Chevy, GMC, Pair

Part Number: SUM-BRC-66041PR

Not Yet Reviewed

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

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

Part Number: SUM-G7775

4.4 out of 5 stars ( 5 )

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

Step Bars, Oval, Steel, Black Powedercoated, 4 in. Diameter, Extended Cab, Chevy, GMC, Pair

Part Number: SUM-710202-B

3.6 out of 5 stars ( 5 )

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

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Carpet, Passenger Area, Cut Pile, Medium Gray / Pewter , Silverado 1500 Ext Cab , 3 and 4 Door , Chevrolet, GMC, Each

Part Number: SUM-461073-MGRY

4.0 out of 5 stars ( 2 )

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

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Distributor, Aluminum, Magnetic Pickup, Electronic Advance, Chevy, 4.3L, V6, Vortec, Each

Part Number: SUM-850097

4.76 out of 5 stars ( 66 )

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

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Carpet, Passenger Area, Cut Pile, Black , Silverado 1500 Reg Cab , 2 & 4WD , Chevrolet, GMC, Each

Part Number: SUM-461075-BLK

1.0 out of 5 stars ( 1 )

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

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

Part Number: SUM-G7741

4.38 out of 5 stars ( 8 )

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