2003 CHEVROLET SILVERADO 1500 HD Ignitions & Electrical

Standard Motor Wiring Connectors HP4440

Wiring Pigtails, 3-pin, Male, Black, for use on Acura®, Chevy, Chrysler, Ford, GMC, International, Isuzu, Mitsubishi, Saab, Saturn, Suzuki, Each

Part Number: SMP-HP4440

5.0 out of 5 stars ( 1 )

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ACDelco Conventional Resistor Spark Plugs 19354418

Spark Plug, Conventional Resistor, Nickel Alloy Tip, Tapered Seat, 14mm Thread, Each

Part Number: ADO-R44LTSM

4.33 out of 5 stars ( 3 )

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Clayton Machine Ignition Coil Covers LSC-01-M

Clayton Machine Ignition Coil Covers LSC-01-M

Ignition Coil Cover, Aluminum, Machined, Milled Finish, Natural, Chevrolet, Pair

Part Number: CYM-LSC-01-M

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Taylor 409 Pro Race Spiro-Wound 10.4mm Spark Plug Wires 79605

Spark Plug Wires, 409 Pro Race, Spiro-Wound, 10.4mm, Blue, Stock Boots, Chevy, GMC, 4.8/5.3/6.0L, V8, Set

Part Number: TAY-79605

4.85 out of 5 stars ( 27 )

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Intellitronix High Output Ignition Coils IGCL001-LS

Ignition Coils, Coil Pack, Epoxy, Square, Red, LS, V8, Buick, Cadillac, Chevy, GMC, Hummer, Pontiac, Set of 8

Part Number: IZL-IGCL001-LS

4.0 out of 5 stars ( 2 )

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Powermaster High-Amp Alternators 38237

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

Part Number: PWM-38237

Not Yet Reviewed

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Mr. Gasket OE-Style Starters 51302ZG

Starter, Standard Rotation, Zinc/Natural, GM, LS Engines, Each

Part Number: MRG-51302ZG

Not Yet Reviewed

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Standard Motor T-Series Crankshaft Position Sensors PC278T

Crankshaft Position Sensor, T-Series, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Pontiac, Saab, Each

Part Number: SMP-PC278T

Not Yet Reviewed

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Powermaster Street Alternators 8237

Alternator, Street, 180 Amps, Natural Finish, Serpentine, Chevy, GMC, Hummer, Isuzu, Each

Part Number: PWM-8237

5.0 out of 5 stars ( 2 )

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Powermaster XS Volt Alternators 5823783

Alternator, XS Volt, GM AD244 Case, 220 amps, Under Drive Serpentine Pulley, Offset Mount, Black Powdercoat, Internal Regulator, Chevrolet, GMC, Each

Part Number: PWM-5823783

Not Yet Reviewed

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Haltech Nexus Rebel LS MAP Sensor Adapter Harnesses HT-186511

Map Sensor Adapter, Convert LS Gen III Map Sensor Harness to Gen IV LS Bosch Style Sensor, Nexus Rebel, Chevrolet, Each

Part Number: HTH-HT-186511

5.0 out of 5 stars ( 1 )

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MSD Blaster OEM Replacement Coils 8263

Ignition Coil, Blaster OEM Replacement, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, 4.8, 5.3, 6.0L, Each

Part Number: MSD-8263

5.0 out of 5 stars ( 3 )

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Dorman Power Window Switches 901-075

Power Window Switch, Master Switch, 8 Buttons, Black/Brown, Plastic, Illuminated, Cadillac, Chevy, GMC, Each

Part Number: RNB-901-075

3.67 out of 5 stars ( 3 )

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Summit Racing™ Race Series 50 Ohm 8.5mm Ignition Wires SUM-887828WS

Spark Plug Wires, Race Series, 8.5mm, Black, 50 Ohm, 9" Leads, OEM Spark Plug Boots With Heat Shields Installed, LS, V8, Set

Part Number: SUM-887828WS

Not Yet Reviewed

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Taylor ThunderVolt 8.2mm Spark Plug Wire Sets 84044

Spark Plug Wires, ThunderVolt, Spiro-Wound, 8.2mm, Black, Buick, Cadillac, Chevy, Pontiac, Hummer, Saab, Set

Part Number: TAY-84044

4.75 out of 5 stars ( 4 )

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Summit Racing™ OE Replacement Alternators SUM-810353

Alternator, Stock Replacement, Natural Finish, Buick, Cadillac, Chevrolet, GMC, Isuzu, Saab, Each

Part Number: SUM-810353

3.17 out of 5 stars ( 6 )

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ACCEL Super Coils 140043-8

Ignition Coils, Coil Pack, Black/Yellow, Epoxy, Buick, Chevy, GMC, Hummer, Pontiac, LS2, LS3, LS7, Set of 8

Part Number: ACC-140043-8

4.35 out of 5 stars ( 20 )

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Dorman Crankshaft Position Sensors 917-754

Crankshaft Position Sensor, Buick, Cadillac, Chevy, GMC, Hummer, Pontiac, Saab, Each

Part Number: RNB-917-754

Not Yet Reviewed

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Summit Racing™ Race Series 50 Ohm 8.5mm Ignition Wires SUM-887830

Spark Plug Wires, Race Series, 8.5mm, Black, 50 Ohm, 12" Leads, OEM Spark Plug Boots That Accept Heat Shields, LS, V8, Set

Part Number: SUM-887830

4.13 out of 5 stars ( 30 )

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Denso Platinum TT Spark Plugs 4511

Spark Plugs, Platinum TT, Tapered Seat, 14mm Thread, 18mm Reach, Resistor, Each

Part Number: DNP-4511

Not Yet Reviewed

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ICT Billet Wiring Harness Extensions WECTS30-36

Wiring Connectors, Coolant Temperature Sensor Extension, 36 in., 2 Pin, Each

Part Number: ICB-WECTS30-36

Not Yet Reviewed

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Autolite Double Platinum Spark Plugs PP5245

Spark Plug, Double Platinum, 14mm Thread, 0.708 in. Reach, Tapered Seat, 5/8 in. Wrench Size, Each

Part Number: ATL-APP5245

Not Yet Reviewed

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Summit Racing™ Idle Air Control Valve and Throttle Position Sensor Bolt Kits SUM-921100

Replacement Component, IAC/TPS Mounting Hardware, Stainless, GM LS Engines, Each

Part Number: SUM-921100

5.0 out of 5 stars ( 7 )

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Standard Motor Blue Streak Performance Race Spark Plug Wire Sets 10039

Spark Plug Wires, Blue Streak Performance Race, Assembled, Spiral Core, 9mm, Black, Set

Part Number: SMP-10039

4.5 out of 5 stars ( 8 )

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ACCEL Super Coils 140043K-8

Ignition Coils, Super, Coil Pack Style, Female/Socket, Epoxy, Black, Square, Buick, Cadillac, Chevy, GMC, Hummer, Pontiac, Set of 8

Part Number: ACC-140043K-8

5.0 out of 5 stars ( 1 )

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