2003 CHEVROLET SILVERADO 1500 Summit Racing Parts and Accessories

Gasket, Gen. 3/4 LS Timing Cover Set with Seal and Oil pump O-Rings, Cork/Rubber, 4.8/5.3/5.7/6.0/6.2L, V8's, Kit

Part Number: SUM-G2628

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 1/19/2026

Spark Plug Wires, 86 Series, 8mm, 300 Ohm, Red, 9" Leads, OEM Spark Plug Boots That Accept Heat Shields, LS, V8, Set

Part Number: SUM-867828R

4.44 out of 5 stars ( 100 )

Estimated Ship Date: Monday 1/19/2026

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

Part Number: SUM-G7744

4.0 out of 5 stars ( 10 )

Estimated Ship Date: Monday 1/19/2026

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 1/19/2026

Map Sensor Adapter, Convert LS1/LS2 Map Sensor to LS3 Sensor, Harness Adapter, Chevrolet V8, Each

Part Number: SUM-890133

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/19/2026

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

Part Number: SUM-367-187

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/19/2026

Spark Plug Wires, 86 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 1/19/2026

Spark Plug Wires, 86 Series, 8mm, 300 Ohm, Blue, 9" Leads, OEM Spark Plug Boots That Accept Heat Shields, LS, V8, Set

Part Number: SUM-867828

4.14 out of 5 stars ( 14 )

Estimated Ship Date: Monday 1/19/2026

Ignition Coils, Coil Pack, D585 Style, Epoxy, Round, Black, LS, V8, Chevy, Cadillac, GMC, Buick, Hummer, Isuzu, Each

Part Number: SUM-850501-1B

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

Heat Protection, Spark Plug Boot Heat Shields, Straight, Aluminum, Natural, 2 3/8 in. Long, LS, Set of 8

Part Number: SUM-889511

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/19/2026

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 1/19/2026

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 1/19/2026

Spark Plug Wires, 86 Series, 8mm, 300 Ohm, Red, Chevy / GMC, Vortec Flat Cap, 4.3L, V6, Set

Part Number: SUM-867650R

4.47 out of 5 stars ( 15 )

Estimated Ship Date: Monday 1/19/2026

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: Monday 1/19/2026

Throttle Body Adapter Harness, LS2 Throttle Body to LS1 Vehicle, Each

Part Number: SUM-890106

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

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

Part Number: SUM-G7777

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/19/2026

Headlight Assembly RH 03-04 Silverado / Avalanche Wo/Cladng Orig Smooth Oe Dsgn, Each GM2503224

Part Number: SUM-GM269-B001R

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

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

Part Number: SUM-889505

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

Headlight Assembly LH 03-04 Silverado / Avalanche Wo/Cladng Orig Smooth Oe Dsgn, Each GM2502224

Part Number: SUM-GM269-B001L

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

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

Part Number: SUM-G7740

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/19/2026

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

Part Number: SUM-889505R

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

Tail Light Assembly LH 2003 Silverado Fleetside Except 3500 Model, Each GM2800161

Part Number: SUM-GM277-B000L

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/19/2026

Ignition Coils, Coil Pack, D585 Style, Epoxy, Round, Red, LS, V8, Chevy, Cadillac, GMC, Buick, Hummer, Isuzu, Each

Part Number: SUM-850501-1R

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/19/2026

Tail Light Assembly RH 2003 Silverado Fleetside Except 3500 Model, Each GM2801161

Part Number: SUM-GM277-B000R

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

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

Part Number: SUM-889505BL

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/19/2026