2003 CHEVROLET SILVERADO 2500 HD Ignitions & Electrical - In Stock Filter Options - Vendor In Stock Filter Options

ICT Billet Wiring Harness Extensions WEPUR30-12

Wire Extension 12" LS Purge Valve EVAP Solenoid

Part Number: ICB-WEPUR30-12

Not Yet Reviewed

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Scott Performance High Performance Spark Plug Wire Sets CH-LS-T-9

Scott Performance High Performance Spark Plug Wire Sets CH-LS-T-9

Spark Plug Wire Set, High Performance, 10mm Diameter, Coil Pack, Spiral Core, 30 ohms/ft., Fluorescent Orange Wire, Chevy, Small Block, Set

Part Number: SCW-CH-LS-T-9

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Standard Motor Wiring Connectors HP4240

Wiring Connectors, Mass Air Flow Sensor Connector, Male, 10 in. Length, For Use on Acura®, Avanti, Buick,Chevy, Each

Part Number: SMP-HP4240

Not Yet Reviewed

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Dorman Steering Wheel Position Sensors 601-003

Steering Wheel Position Sensor, Buick, Cadillac, Chevy, GMC, Hummer, Saab, Each

Part Number: RNB-601-003

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 11, 2026 if ordered today

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Estimated Ship Date: Mar 11, 2026 if ordered today

Fleece Performance Wiring Harness Extensions FPE-HAR-RP-EXT

Wiring Wire Extension, 18 in., MAP Sensor, Fuel Pressure Sensor, Chevy, GMC, Dodge, Ram, Each

Part Number: FLE-FPE-HARRPEXT

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Granatelli Motor Sports Ignition System Combo Kits 28-1629KIT

Ignition System Combo Kit, Ignition Coils, Blue Spark Plug Wires, 8mm Wire Diameter, Buick, Cadillac, Chevrolet, GMC, Hummer, Pontiac, Kit

Part Number: GRN-28-1629KIT

Not Yet Reviewed

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Autolite Single Platinum Spark Plugs AP5245

Spark Plug, Single Platinum, Platinum, 14mm Thread, 0.679 in. Reach, Tapered Seat, 5/8 in. Wrench Size, Each

Part Number: ATL-AP5245

Not Yet Reviewed

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Dorman Wiring Connectors 645-631

Wiring Pigtails, Wiring Connectors, Buick, Cadillac, Chevy, GMC, Hummer, Oldsmobile, Pontiac, Saab, Saturn, Each

Part Number: RNB-645-631

Not Yet Reviewed

Estimated Ship Date: Mar 12, 2026 if ordered today

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Estimated Ship Date: Mar 12, 2026 if ordered today

Beck/Arnley Crankshaft Position Sensors 180-0563

Crankshaft Position Sensors, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Pontiac, Saab, Each

Part Number: BCK-180-0563

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Moroso Ultra 40 Unsleeved Custom-Fit Wire Sets 73703

Spark Plug Wires, Ultra 40, Spiral Core, 7.0mm, Black, 180 Degree Boots, Chevy, Set

Part Number: MOR-73703

Not Yet Reviewed

Estimated Ship Date: Mar 18, 2026 if ordered today

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Estimated Ship Date: Mar 18, 2026 if ordered today

Bosch Relays 0986AH0115

Relays, Buick, Cadillac, Chevrolet, GMC, Pontiac, Each

Part Number: BCH-0986AH0115

Not Yet Reviewed

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ACDelco Air Temperature Sensors 22834330

Air Temperature Sensors, OE Replacement, Push To Connect, Cadillac, Chevrolet, GMC, Hummer, Each

Part Number: ADO-22834330

Not Yet Reviewed

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Delphi XS Ignition Wire Sets XS10388

Spark Plug Wire, Spiral Core, 7mm, Black, Stock Boots, Cadillac, Chevy, GMC, Hummer, Set

Part Number: DFP-XS10388

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Taylor ThunderVolt 8.2mm Spark Plug Wire Sets 82205

Spark Plug Wires, ThunderVolt, Spiro-Wound, 8.2mm, Red, Straight Boots, Cadillac/Chevy, GMC, 4.8/5.3/6.0L, Set

Part Number: TAY-82205

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Dorman Oil Pressure Sensors 926-701

Oil Press Sensor

Part Number: RNB-926-701

Not Yet Reviewed

Estimated Ship Date: Mar 12, 2026 if ordered today

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Estimated Ship Date: Mar 12, 2026 if ordered today

Taylor Spiro-Pro Spark Plug Wire Sets 72225

Spark Plug Wires, Spiro-Pro, 8mm, Red, Stock Boots, Chevy, GMC, 8.1L, V8, Set

Part Number: TAY-72225

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

MechMan Elite Series Billet Alternators B8206370RD

Alternator, E Series, 12 V, 370 amps, Billet Aluminum, Red Anodized, Serpentine, Buick, Cadillac, Chevy, GMC, Hummer, Oldsmobile, Each

Part Number: MEH-B8206370RD

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Dorman Power Window Switches 920-024

Power Window Switch, Front Left, 5-button, Rocker, Black, Chevy, GMC, Each

Part Number: RNB-920-024

Not Yet Reviewed

Estimated Ship Date: Mar 12, 2026 if ordered today

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Estimated Ship Date: Mar 12, 2026 if ordered today

ACDelco Wiring Connectors 15306071

Wiring Pigtail, Alternator, Female, 1-pin, Each

Part Number: ADO-PT1235

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Fleece Performance Wiring Pigtails FPE-HAR-RP-PT

Rail Pressure Sensor Pigtail

Part Number: FLE-FPE-HAR-RPPT

Not Yet Reviewed

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MechMan Elite Series Cast Alternators 8206400-RED

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

Part Number: MEH-8206400-RED

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Dorman Wiring Connectors 645-595

Wiring Pigtails, Wiring Connectors, Female, Buick, Cadillac, Chevy, GMC, Hummer, Oldsmobile, Pontiac, Saab, Saturn, Each

Part Number: RNB-645-595

Not Yet Reviewed

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ICT Billet MAF Harness Extensions WAMAF40-6

Wire Adapter Harness Mass Air MAF LS Gen 4 Truck Tube Style to LS3 Card Style

Part Number: ICB-WAMAF40-6

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Dorman Ignition Key Lock Cylinders 924-725

Ignition Switch Lock Cylinder, Buick, Cadillac, Chevrolet, GMC, Pontiac, Each

Part Number: RNB-924-725

Not Yet Reviewed

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Scott Performance High Performance Spark Plug Wire Sets CH-LS-T-4

Spark Plug Wire Set, High Performance, 10mm Diameter, Coil Pack, Silicone Boot, Black, Spiral Core, 30 ohms/ft., Blue Wire, Chevy, Small Block, Set

Part Number: SCW-CH-LS-T-4

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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