2003 CHEVROLET SILVERADO 2500 HD Parts & Accessories

Fel-Pro Valley Pan Gaskets MS 92465

Gasket, Valley Pan, Rubber With Steel Core, All Gen. 3 Chevy LS V8, 4.8L, 5.3L, 5.7L, 6.0L Set with knock sensor grommets, Each

Part Number: FEL-MS92465

4.67 out of 5 stars ( 21 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

McGaughy's Shocks 2950

Shock, Twin-Tube, Rear, 7-8 in. Lift, Chevy, GMC, Dodge, Each

Part Number: MMC-2950

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Chevrolet Performance Main Cap Fasteners 12560273

Main Bolts, Outer Bolts, With Windage Tray, Chevy, LS, Each

Part Number: NAL-12560273

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Eaton Detroit Truetrac 30 Spline Differential GM 10.5 Inch (14-bolt) 915A547

Differential, Eaton Detroit Truetrac, 30-Spline, GM, 10.5 in. Ring Gear, 4.56 and Higher Ratios, Each

Part Number: ETN-915A547

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

VEGE Remanufactured Long Block Crate Engines DCTF

Crate Engine, Remanufactured, Long Block, Assembled, GM, 6.0L, Each

Part Number: VRE-DCTF

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

NGK G-Power Platinum Spark Plugs TR5GP

Spark Plug, G-Power Platinum, Tapered Seat, 14mm Thread, .708 in. Reach, Projected Tip, Resistor, Each

Part Number: NGK-3186

4.93 out of 5 stars ( 28 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

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

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 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Strange U-Joints U1641

Universal Joint, 1350 Style, Steel, Each

Part Number: STR-U1641

3.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Taylor 409 Race-Fit Pro Race Spark Plug Wires 79614

Wire, 409 Race-Fit Pro, Spiral Core, 10.4mm, Blue, Coil Pack, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Saab

Part Number: TAY-79614

4.89 out of 5 stars ( 19 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Powermaster XS Volt Alternators 482378

Alternator, Street Alternator, GM AD244 Style, 12/14/16V, 220 amps, Natural, Serpentine Pulley, Each

Part Number: PWM-482378

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

MechMan High-Output Alternators 8206240

Alternator, 240 amps, 12 V, Internal Regulator, Serpentine, Buick, Chevy, Oldsmobile, Each

Part Number: MEH-8206240

4.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

ACDelco Electric Fuel Pumps 19369915

Fuel Pump, Electric, Sending Unit, Chevy, GMC, Each

Part Number: ADO-MU1613

4.91 out of 5 stars ( 55 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

ACDelco GM Genuine Parts Engine Coolant Temperature Sensors 12608814

Sensor, Coolant Temperature, Brass, Natural, Chevy, Pontiac, Each

Part Number: ADO-213-4333

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Summit Racing™ Truck Shocks SUM-G7744

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 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Summit Racing™ Header Bolts SUM-910228

Exhaust Manifold Hardware, Hex Flange, 10.9 Steel, Zinc Plated, Chevrolet, LS, Set of 12

Part Number: SUM-910228

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

ACDelco GM Genuine Parts Camshaft Thrust Plates 12589016

Camshaft Thrust Plates, GM Genuine Parts, Solid Type, Steel, Chevrolet, Each

Part Number: ADO-12589016

3.25 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

King XP-Series Main Bearings MB5013XP 010X

Main Bearings, XP-Series, Copper/Lead/Nickel, 0.010 in. Crankshaft Undersize, Chevy, 4.8, 5.3, 5.7, 6.0L, Set

Part Number: KGB-MB5013XP010X

4.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Cometic MLS Head Gaskets C15514-051

Head Gasket, Multi-Layer Steel, MLS, 4.070 in. Bore, .051 in. Compressed Thickness, GM 6.2L LS3, L92, Each

Part Number: CGT-C15514-051

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Four Seasons Fan Mount Pull Tie Kits 53014

Electric Fan Mounting Brackets, Nylon, Black, Kit

Part Number: FSS-53014

4.74 out of 5 stars ( 53 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Auto Metal Direct Hoods 300-4003-2

Hood, Cowl Induction Style, Bolt-on, Steel, EDP Coated, Chevy, Each

Part Number: AMD-300-4003-2

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Powermaster Street Alternators 58247

Alternator, Street, 165 Amps, Black Powdercoated Finish, Serpentine, Cadillac, Chevy, GMC, Each

Part Number: PWM-58247

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Hays Heavy-Duty 168-Tooth Flexplate 40-508

Flexplates, Heavy-Duty, 168-tooth, Steel, SFI 29.1, Internal Engine Balance, One-piece Rear Main Seal, Chevrolet, Small Block LS, Each

Part Number: HAY-40-508

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Banks Power Ram-Air 14 Bolt AAM 10.5/11.8 Inch Differential Cover 19249

Differential Cover, Power Ram-Air, Satin Black, Milled Aluminum, Chevy, GMC, Dodge, AAM 11.5/11.8, 14-Bolt, Rear Axle, Each

Part Number: GBE-19249

4.53 out of 5 stars ( 19 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

VEGE Remanufactured Long Block Crate Engines VCTF4WD

Crate Engine, Remanufactured, Long Block, Assembled, GM, 6.0L, 4WD, Each

Part Number: VRE-VCTF4WD

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Apr 2, 2026 if ordered today

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Estimated Ship Date: Apr 2, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

ATK High Performance Chevy LQ4 6.0L 460 HP Long Block Crate Engines HP93

4.5 out of 5 stars ( 10 )

Estimated Ship Date: Monday 2/23/2026

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Mr. Gasket LS Thermostats 6367

Thermostat, 160 Degree, High-Flow, Copper/Brass, Chevy, LS, Each

Part Number: MRG-6367

4.19 out of 5 stars ( 16 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

2003 CHEVROLET SILVERADO 2500 HD Parts and Accessories