2003 CHEVROLET SILVERADO 1500 Parts & Accessories

Bilstein B8 5100 Series Shocks 24-186636

Shock, 5100 Series, Monotube, Rear, Chevy, GMC, Lifted, 4WD, Each

Part Number: BSN-24-186636

4.93 out of 5 stars ( 41 )

Estimated Ship Date: Today

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McGaughy's Shocks 2050

McGaughy's Shocks 2050

Shock, Twin-Tube, Rear, 4-7 in. Drop, Chevy, GMC, Each

Part Number: MMC-2050

3.4 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Mr. Gasket Water Necks 2670BK

Water Neck, Aluminum, Black Anodized, Swivel, 60 Degree, Chevrolet, LS, Each

Part Number: MRG-2670BK

4.25 out of 5 stars ( 8 )

Estimated Ship Date: Today

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SCE Vulcan Cut-Ring Head Gaskets CR200559

Head Gasket, Vulcan Cut-Ring, 4.056 in. Bore, Chevy LS, Each

Part Number: SCE-CR200559

1.0 out of 5 stars ( 3 )

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Walker Heavy-Duty U-Bolt Clamps 35337

Muffler U-Clamp, Exhaust Clamp, Heavy Duty, 2.5 in. Steel, Each

Part Number: WLK-35337

4.84 out of 5 stars ( 25 )

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Melling High-Volume Oil Pumps M155HV

Oil Pump, High-Volume, Chevy, Small Block, V6, Each

Part Number: MEL-M155HV

4.63 out of 5 stars ( 19 )

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75W90 Motul Gear 300 LS 75W90 Oil 105778

Gear Lube, Gear 300 LS Oil, Synthetic, 75W90, 1 Liter, Each

Part Number: MTL-105778

5.0 out of 5 stars ( 1 )

Cannot be shipped Internationally

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Cannot be shipped Internationally

Fel-Pro Headbolt Kits ES 72173

Cylinder Head Bolts, Chevy LS 4.8, 5.3, 5.7, 6.0L, 1 Cylinder Head, Kit

Part Number: FEL-ES72173

4.14 out of 5 stars ( 22 )

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MechMan S Series Billet Racing Alternators B8206240B

240 Amp High Output Alternator, Black Billet, Each

Part Number: MEH-B8206240B

5.0 out of 5 stars ( 1 )

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Standard Motor Fuel Injectors FJ315

Fuel Injector, OE Style, with O-rings, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Each

Part Number: SMP-FJ315

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Cometic MLS Head Gaskets C15361-040

Head Gasket, MLS, Multi-Layer Stainless, 3.810 in. Bore, 0.040 in. Compressed Thickness, Buick, Cadillac, Chevy, GMC, Hummer, Pontiac, Saab, LS, Each

Part Number: CGT-C15361-040

5.0 out of 5 stars ( 1 )

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McGard Lug Nut Installation Kits 84640

Lug Nuts, Conical, Standard and Locking, Stainless, Black Chrome, 14mm x 1.50 RH Thread, Set of 24

Part Number: MCG-84640

5.0 out of 5 stars ( 19 )

Estimated Ship Date: Today

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Chevrolet Performance Rear Main Seals 89060436

Rear Main Seal, 1 Piece, Buick, Chevy, GMC, Pontiac, Saab, LS Engine, Each

Part Number: NAL-89060436

4.75 out of 5 stars ( 4 )

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DiabloSport Trinity 2 EX Platinum Performance Programmers 9245

Computer Programmer, Trinity 2 EX Platinum Performance, Competition Use Only, Buick, Cadillac, Chevy, GMC, Hummer, Pontiac, Each

Part Number: DBL-9245

3.67 out of 5 stars ( 24 )

Estimated Ship Date: Today

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Walbro Electric In-Tank Fuel Pumps TU432HP-4

Fuel Pump, Electric, In-Tank, 255 lph, Chevy, GMC, Each

Part Number: VPN-TU432HP-2

4.5 out of 5 stars ( 24 )

Estimated Ship Date: Today

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B&M Transmission Brackets and Levers 35498

Transmission Bracket, Steel, Natural, Chevy TH400/TH350/TH250/200-4R/700R4/TH350C, Kit

Part Number: BMM-35498

4.83 out of 5 stars ( 60 )

Estimated Ship Date: Today

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Cometic MLS Head Gaskets C15515-040

Head Gasket, MLS, Multi-Layer Steel, 4.030 in. Bore, 0.040 in. Compressed Thickness, Cadillac, Chevrolet, Pontiac, Small Block LS, Each

Part Number: CGT-C15515-040

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Cometic MLS Head Gaskets H1295SP5040S

Not Yet Reviewed

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Richmond Gear EXCel Ring and Pinion Sets GM85410 GM 8.5/8.6 in. 4.10 Gears

Ring and Pinion Gears, EXCel, 4.10:1 Ratio, 30-spline, Standard Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: RMG-GM85410

4.0 out of 5 stars ( 8 )

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Richmond Gear EXCel Ring and Pinion Sets GM85342 GM 8.5/8.6 in. 3.42 Gears

Gear, Ring and Pinion, EXCel, 3.42:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: RMG-GM85342

4.4 out of 5 stars ( 5 )

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Lares New Power Steering Pumps 13155

Power Steering Pump, New, Stock Model, Reservoir, AMC, Buick, Cadillac, Chevy, Chrysler, Dodge, Ford, GMC, Jeep, Oldsmobile, Plymouth, Pontiac, Each

Part Number: LSC-13155

4.0 out of 5 stars ( 6 )

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Motive Gear Ring and Pinion Sets GM10-456A GM 8.5/8.625 in. 4.56 Gears

Ring and Pinion Gears, 4.56:1 Ratio, 30-spline, Standard Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: MGR-GM10-456A

4.46 out of 5 stars ( 13 )

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Mahle Original Cylinder Head Gaskets 54445

Head Gasket, Multi-Layer Steel, 4.100 in. Bore, Cadillac, Chevy, GMC, Hummer, Isuzu, Pontiac, Saab, Each

Part Number: MAH-54445

5.0 out of 5 stars ( 3 )

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Hayden Rapid-Cool Transmission Oil Coolers 677

Transmission Oil Cooler, Plate, Natural, 11 in. x 7.5 in. x 0.75 in., 3/8 in. Inlet, Outlet, Each

Part Number: HDA-677

4.61 out of 5 stars ( 23 )

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Edelbrock Max-Fire Ultra-Spark 50 Spark Plug Wire Sets 22716

Spark Plug Wires, Max-Fire Ultra-Spark 50, Spiral Core, 50 ohms, 8.5mm, Red, Buick, Cadillac, Chevy, GMC, Hummer, Saab, Trucks, Small Block LS, Set

Part Number: EDL-22716

4.97 out of 5 stars ( 33 )

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King HP-Series Cam Bearings CS5171HPT

Cam Bearings, Performance, Bi-metal, Fluoropolymer Lead-Based Micro Babbitt, Chevy LS, 3rd Design, Set of 5

Part Number: KGB-CS5171HPT

Not Yet Reviewed

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2003 CHEVROLET SILVERADO 1500 Parts and Accessories