2003 CHEVROLET SILVERADO 1500 HD Parts and Accessories

Intake Manifold Gaskets, Original, Stock Port, Molded Rubber Compound, Chevy, 4.8L, 5.3L, 6.0L, Kit

Part Number: MAH-MIS16340

4.6 out of 5 stars ( 15 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Exhaust Gaskets, Header, Graphite, 1.875 in. Port, 0.125 in. Thick, Chevy, LS, Pair

Part Number: RFL-2008

4.63 out of 5 stars ( 38 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Gear Lube, 80W90, Limited Slip Additive, 3 qt., Each

Part Number: YGA-15003

4.95 out of 5 stars ( 22 )

Cannot be shipped Internationally if shipped by air

• Restricted

Rod Bearings, XP-Series, Tri-Metal, .010 in. Crankshaft Undersize, Narrowed, Large Journal, Chevy, Small Block, Set of 8

Part Number: KGB-CR807XPN010

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Ignition Coils, High Performance, Direct Replacement, Round, Epoxy, Black, Chevy, LS, Set of 8

Part Number: DFR-DFC1004-8

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Rod Bearings, Standard Size, Bi-metal, Silicon Aluminum, Large Journal, Chevy, Small Block, Set of 8

Part Number: KGB-CR807SI

4.86 out of 5 stars ( 14 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Main Bearings, 1/2 Groove, Standard Size, Bi-metal, Silicon Aluminum, Chevy, Small Block, LS, Set of 5

Part Number: KGB-MB5013HP

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Rocker Arms, GM Genuine Parts, Roller Fulcrum, Pedestal, 1.7 Ratio, Steel, Exhaust Side, Buick, Cadillac, Chevrolet, GMC, Hummer, Pontiac, Saab, Each

Part Number: ADO-12681275

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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

Part Number: SUM-710101-SS

4.72 out of 5 stars ( 18 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

• Free Shipping

Rod Bearings, A-Series, Bi Metal, Standard Size, Chevy, Small Block, Set of 8

Part Number: SLP-8-2555A

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Rod Bearings, Race Series, CT-1 Coated, Tri-Metal, Chevrolet, Small Block, LS, Set of 8

Part Number: PEB-8B663HC-STD

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Battery, Dry Cell, 12 V, Deep Cycle/Starting, 850 Cold Cranking Amps, Side Post, 78 Group, Each

Part Number: ODY-78-PC1500

4.69 out of 5 stars ( 13 )

Cannot be shipped Internationally if shipped by air

• Restricted
• Free Shipping

Computer Tuner, Cadillac, Chevy, GMC/Pontiac, Passenger Car/Pickup/SUV, 4.8/5.0/5.3/5.7/6.0/7.4/8.1L, Each

Part Number: JET-14005

3.62 out of 5 stars ( 21 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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GM TORQUE CONVERTER, 4L80E, 4L85E, LS MOTOR, TRIPLE CLUTCH 3200 STALL

Part Number: FTI-SRLS40082-3

Not Yet Reviewed

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Steering Shaft, Direct Replacement, Steel Alloy, Chevy/GMC, C/K Pickup, Each

Part Number: BRG-000937

4.95 out of 5 stars ( 21 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Alternator, High-Amp, GM AD244 Case, 220 amps, 12 V, Serpentine Pulley, Offset Mount, Black Powdercoat, Internal Regulator, Chevrolet, GMC, Each

Part Number: PWM-58237

4.2 out of 5 stars ( 10 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Head Gasket, Multi-Layer Steel, 4.030 in. Bore, Cadillac, Chevy, GMC, Hummer, Isuzu, Pontiac, Saab, Each

Part Number: MAH-54445

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Headers, Street, Shorty, Steel, Temporary Paint, Cadillac, Chevy, GMC, Hummer, Small Block LS, Pair

Part Number: HED-69690

4.56 out of 5 stars ( 34 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Head Gasket, MLS, 4.100 in. Bore, .051 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5489-051

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Air Intake Tube, Modular, Polyethylene, Black, Cadillac, Chevy, GMC, Kit

Part Number: AID-200-912

4.62 out of 5 stars ( 37 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Harmonic Balancer, Super Damper, Internal Balance, Aluminum/Steel, Chevy, GMC, LS, Each

Part Number: ATI-918629

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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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 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Spark Plug Wires, Extreme 9000 Ceramic, Spiral Core, 8mm, Black, White Ceramic 180 Degree Boots, GM, 4.8, 5.3, 6.0L, Set

Part Number: ACC-9059C

3.95 out of 5 stars ( 20 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

• Free Shipping

Power Steering Pump, High Performance, High-Flow, 1600 psi, Black Reservoir, Non-Hydroboost, Chevrolet, GMC, Each

Part Number: PFN-SP1403

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

• Free Shipping