2003 CHEVROLET SILVERADO 1500 HD - In Stock Filter Options - Vendor In Stock Filter Options Parts & Accessories

75W90 Mobil 1 Synthetic Gear Lubricant LS 104361

Gear Lube, Synthetic Gear Lubricant LS, 75W90, 1 qt., Synthetic, Each

Part Number: MOB-104361-1

5.0 out of 5 stars ( 32 )

Cannot be shipped Internationally if shipped by air

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Cannot be shipped Internationally if shipped by air

Summit Racing™ LS Valve Cover Gasket Kits SUM-G2603

Valve Cover Gasket Set, GM, Chevy, GEN III/IV LS, 5.3, 5.7, 6.0, 6.2, 7.0, Vortec Truck, LS1 LS2 LS6 LS3 LS7 LQ4 LQ9 LS9, Pair

Part Number: SUM-G2603

5.0 out of 5 stars ( 1 )

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

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

75W90 Royal Purple Max-Gear Synthetic Gear Oil 01300

Gear Oil, Max-Gear, Synthetic, 75W90, Quart, Each

Part Number: RPO-01300

4.92 out of 5 stars ( 111 )

Cannot be shipped Internationally if shipped by air

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Cannot be shipped Internationally if shipped by air

ACDelco GM Genuine Parts Engine Valve Lifter Guides 12595365

Valve Lifter Guide, Plastic, Hydraulic Roller, Non-AFM/DOD, Chevrolet, LS, Each

Part Number: ADO-12595365

5.0 out of 5 stars ( 4 )

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

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

Royal Purple Synchromax Manual Transmission Fluid 01512

Transmission Fluid, Manual, 10W, Synthetic, Quart, Each

Part Number: RPO-01512

4.74 out of 5 stars ( 80 )

Cannot be shipped Internationally if shipped by air

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Cannot be shipped Internationally if shipped by air

NGK Laser Iridium Spark Plugs IZTR5B11

Spark Plug, IZTR5B11, Laser Iridium, 14mm Thread, 0.708 in. Reach, Tapered Seat, 5/8 in. Hex, Each

Part Number: NGK-1465

4.84 out of 5 stars ( 25 )

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

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

Royal Purple Max ATF Transmission Fluid 01320

Transmission Fluid, Max ATF, Synthetic, Quart, Each

Part Number: RPO-01320

4.97 out of 5 stars ( 58 )

Cannot be shipped Internationally if shipped by air

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Cannot be shipped Internationally if shipped by air

5w30 Mobil Super Synthetic Blend Motor Oil 124407

Engine Oil, Super, Semi-Synthetic, 5W30, 5 qt., Each

Part Number: MOB-124407-1

4.93 out of 5 stars ( 15 )

Cannot be shipped Internationally if shipped by air

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Cannot be shipped Internationally if shipped by air

ACDelco GM Genuine Parts Engine Coolant Temperature Sensors 19236568

Sensor, Coolant Temperature, Brass, Natural, Each

Part Number: ADO-213-4514

4.94 out of 5 stars ( 16 )

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

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

Melling Rocker Arms MR-1341

Rocker Arm, Full Roller, Pedestal Mounting Style, Steel, Natural, Avanti, Buick, Cadillac, Chevy, GMC, Isuzu, Pontiac, Saab, Small Block LS, Each

Part Number: MEL-MR1341

4.8 out of 5 stars ( 5 )

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

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

King SI-Series Rod Bearings CR 807SI

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

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

ACDelco GM Genuine Parts Rocker Arms 12681275

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

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

Mahle Original Exhaust Gaskets MS16124

Exhaust Gaskets, Exhaust Manifold, Multi-layer Steel, GM Truck, LS, Includes EGR and Air Injection Gaskets, Set

Part Number: MAH-MS16124

4.88 out of 5 stars ( 8 )

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

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

Summit Racing™ Header Bolts SUM-910228

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 4/13/2026 if shipped by air

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

NGK Ruthenium HX Spark Plugs TR5AHX

Spark Plugs, Ruthenium HX, Platinum, Resistor, 14mm Thread Size, 0.708 in. Reach, Tapered Seat, Each

Part Number: NGK-94567

5.0 out of 5 stars ( 9 )

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

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

Summit Racing™ Exhaust Manifold Gaskets SUM-110445

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 4/13/2026 if shipped by air

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

Sealed Power Hydraulic Roller Lifters HT-2148A

Lifters, Hydraulic Roller, 0.843 in. O.D., Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Each

Part Number: SLP-HT2148A

4.0 out of 5 stars ( 2 )

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

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

Moog Super Strength U-Joints 231

Universal Joint, Super Strength, 1350 Style, Solid, Steel, Each

Part Number: MOG-231

4.45 out of 5 stars ( 11 )

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

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

McGard Lug Nuts 64014

Lug Nuts, Conical Seat, 14mm x 1.50 RH, 1.945" Long, 22mm Hex, Closed End, Chrome Plated Steel, Set of 4

Part Number: MCG-64014

4.19 out of 5 stars ( 16 )

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

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

Fel-Pro Exhaust Manifold Gaskets MS 92467

Exhaust Gaskets, Steel Core Laminate, Round Port, Chevy, LS, Kit

Part Number: FEL-MS92467

4.57 out of 5 stars ( 21 )

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

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

K&N Performance Gold Oil Filters HP-1007

Oil Filter, Performance Gold, Canister, 3.75 in. Tall, 3.00 in. Diameter, 13/16 in.-16 Thread, Anti-Drainback, Spin-On, Each

Part Number: KNN-HP-1007

4.82 out of 5 stars ( 28 )

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

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

ACDelco GM Genuine Parts Fuel Filters 19425658

Fuel Filters, GM Genuine Parts, Stock Style, Element, Black Steel Housing, 5.75 in. Overall Length, Buick, Cadillac, Chevrolet, GMC, Land Rover, Each

Part Number: ADO-GF952

3.0 out of 5 stars ( 2 )

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

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

Timken Timing Cover Seals 100470

Timing Cover Seal, Each

Part Number: TMK-100470

5.0 out of 5 stars ( 5 )

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

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

Hayden Electric Fan Adjustable Thermostat Kits 3653

Fan Switch, Thermostatic, Radiator Probe, Adjustable 160-240 Degrees F, Kit

Part Number: HDA-3653

4.52 out of 5 stars ( 84 )

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

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

Mr. Gasket LS Starter Bolts 60941MRG

Starter Bolts, Steel, Zinc, Long Bolts, Chevrolet, LS, Pair

Part Number: MRG-60941MRG

5.0 out of 5 stars ( 1 )

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

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

2003 CHEVROLET SILVERADO 1500 HD Parts and Accessories