2003 CHEVROLET SILVERADO 1500 HD Parts and Accessories

Main Bearings, SI-Series, 1/2 Groove, Standard Size, Bi-metal, Silicon Aluminum, Chevy, 4.8, 5.3L, Set of 5

Part Number: KGB-MB5293SI

5.0 out of 5 stars ( 11 )

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

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 4/13/2026 if shipped by air

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

Part Number: SUM-867828R

4.45 out of 5 stars ( 101 )

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

Brake Calipers, Disc, 2-Piston, OE Style, 2.010 Piston Diameter, with Red Iron Brackets, Cast Iron, Powdercoat Red, Cadillac, Chevy, GMC, Hummer, Pair

Part Number: PWR-S4728

4.5 out of 5 stars ( 28 )

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

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Head Gasket, MLS, 4.100 in. Bore, .040 in. Compressed Thickness, Chevy, Each

Part Number: CGT-C5489-040

5.0 out of 5 stars ( 3 )

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

Alternator, Natural, Stock Replacement, 145/130 amps, Buick, Cadillac, Chevrolet, GMC, Isuzu, Saab, Each

Part Number: SUM-810352

4.68 out of 5 stars ( 22 )

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

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Valve Cover Gaskets, Performance, Silicone, Chevy, Small Block LS, Pair

Part Number: FEL-VS50504R1

4.76 out of 5 stars ( 25 )

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

Engine Gasket Sets, Full, Cadillac, Chevy, GMC, Hummer, 6.0L, Kit

Part Number: FEL-260-1955

3.33 out of 5 stars ( 3 )

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

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Differential, Eaton Detroit Truetrac, 33-Spline, GM, 14-Bolt, 9.5 in., Each

Part Number: ETN-914A538

4.44 out of 5 stars ( 9 )

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

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• $75 Summit Bucks

Ignition Coil, Blaster OEM Replacement, Buick, Cadillac, Chevy, GMC, Hummer, 4.8, 5.3, 6.0, 8.1L, Set of 8

Part Number: MSD-82648

4.41 out of 5 stars ( 56 )

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

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Automatic Transmission, Street and Strip, Automatic Valve Body, Forward Shift Pattern, Chevy, GMC, 4L80E, RWD

Part Number: BMM-118002

3.29 out of 5 stars ( 7 )

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

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Radiator, Performance, Aluminum, Polished, Crossflow, 2 Row, Transmission Cooler, Chevy, GMC, Truck, Models with Engine Oil Cooler, Each

Part Number: RAD-GMT569A

3.4 out of 5 stars ( 30 )

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

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Rear Main Seal, 1-Piece, Rubber, GM, 4.8L, 5.3L, 5.7L, 6.0L, LS1, Each

Part Number: FEL-BS40640

4.64 out of 5 stars ( 39 )

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

Brake Caliper, Cast Iron, Red Powdercoated, 2-Piston, Chevy, GMC, Hummer, Front, Pair

Part Number: PWR-S4730

4.5 out of 5 stars ( 8 )

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

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Ignition Coils, Coil Pack, D585 Style, Epoxy, Round, Black, LS, V8, Chevy, Cadillac, GMC, Buick, Hummer, Isuzu, Set of 8

Part Number: SUM-850501B

4.75 out of 5 stars ( 4 )

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

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Transmission Controller, Wireless, Bluetooth, GM 4L60E, 4L65E, 4l70E, 4L80E, 4L85E, TCI 4X, 6X, Each

Part Number: TCI-302600

2.33 out of 5 stars ( 3 )

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

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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

• Restricted

Alternators and Generators, Elite Series Cast Alternators, 12 V, 400 amps, Gloss Black, Serpentine, Buick, Chevrolet, GMC, Hummer, Olds, Pontiac, Each

Part Number: MEH-8206400-BLAC

5.0 out of 5 stars ( 3 )

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

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

Part Number: NGK-2238

5.0 out of 5 stars ( 19 )

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

Starter, Original Look, High-Torque, Natural, Buick, Cadillac, Chevy, Each

Part Number: PWM-3631

4.42 out of 5 stars ( 53 )

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

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GM TORQUE CONVERTER, 4L80E, 4L85E, LS MOTOR,3600 STALL

Part Number: FTI-SRLS40086

3.67 out of 5 stars ( 3 )

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

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Gear, Ring and Pinion, 3.73:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-4900411

4.47 out of 5 stars ( 19 )

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

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Main Bearings, Race Series, Tri-Metal, 3/4 Groove, Standard Size, Chevrolet, LS, Set of 5

Part Number: PEB-5M7298H-STD

Not Yet Reviewed

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

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Gear Lube, MTL Transmission Gear Oil, 75W80, Synthetic, 1 qt., Each

Part Number: RED-50204

4.95 out of 5 stars ( 65 )

Cannot be shipped Internationally if shipped by air

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Battery, Yellow Top, 12 V, Deep Cycle, Starting, 650 Cold Cranking Amps, Top/Side Post, BCI Group D75/25, Each

Part Number: ULT-9042-218

4.93 out of 5 stars ( 30 )

Cannot be shipped Internationally if shipped by air

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• Free Shipping