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

Dorman Crankshaft Position Sensors 917-754

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

Part Number: RNB-917-754

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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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Scott Performance High Performance Spark Plug Wire Sets CH-LS-T-5

Scott Performance High Performance Spark Plug Wire Sets CH-LS-T-5

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

Part Number: SCW-CH-LS-T-5

5.0 out of 5 stars ( 2 )

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Dragon Fire Race Series Spark Plug Wire Sets PWJ121

Spark Plug Wire Sets, Race Series, Assembled, Spiral Core, Coil Pack Terminal Ends, Red Wires, 10mm Diameter, Cadillac, Chevrolet, Small Block LS, Set

Part Number: DFR-PWJ121

5.0 out of 5 stars ( 1 )

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Standard Motor T-Series Neutral and Backup Safety Switches NS85T

Neutral Safety and Backup Light Switch, T-Series, Cadillac, Chevrolet, GMC, Isuzu, Oldsmobile, Each

Part Number: SMP-NS85T

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SCT Livewire Vision Performance Monitors 5015PWD

Computer Programmer, SCT Livewire Vision Performance Monitor, Hand-held, Each

Part Number: SCL-5015PWD

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

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SCT X4 Power Flash Programmers 7015

4.25 out of 5 stars ( 74 )

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Delphi Engine Coolant Temperature Sensors TS10075

Coolant Temperature Sensor, OEM, Brass, Natural, for use on Acura®, Honda®, Chevy, Isuzu, Each

Part Number: DFP-TS10075

4.77 out of 5 stars ( 13 )

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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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Bosch Double Platinum Spark Plugs 8104

Spark Plug, Double Platinum, Tapered Seat, 14mm Thread, 17.5mm Reach, Resistor, Each

Part Number: BCH-8104

5.0 out of 5 stars ( 1 )

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35 amps ACDelco Replacement Relay 13500126

Relays, Replacement, 35 amps, 12 V, 5 Blade Terminals, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Saturn, Suzuki, Each

Part Number: ADO-D1780C

5.0 out of 5 stars ( 2 )

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Dorman Battery Hold-Downs 00587

Battery Hold Down Clamp, Steel, Black, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: RNB-00587

4.86 out of 5 stars ( 7 )

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FAST XR Series Ignition Coils 30387-8

Ignition Coils, XR Series, Black, 50,000 Volts Max, V8, Round Truck Style, LS, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Set of 8

Part Number: FST-30387-8

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Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

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Summit Racing™ High-Output Ignition Coils SUM-850501-1B

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Pacific Performance Engineering Standard Xcelerator Tuners 111020000

Computer Programmer, Standard Xcelerator Tuner, Chevy, GMC, 6.6L Duramax Diesel, Each

Part Number: PPE-111020000

3.67 out of 5 stars ( 3 )

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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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Dorman Knock Sensor Grommets 42003

Knock Sensor Grommet / Seal, Gen III LS Valley Cover, 2 Req'd per engine, Sold each

Part Number: RNB-42003

5.0 out of 5 stars ( 1 )

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Taylor 409 Pro Race Spiro-Wound 10.4mm Spark Plug Wires 79005

Spark Plug Wires, 409 Pro Race, Spiro-Wound, 10.4mm, Black, Straight Boots, Cadillac/Chevy/GMC, 5.3/6.0L, V8

Part Number: TAY-79005

4.0 out of 5 stars ( 1 )

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Taylor Street Thunder Spark Plug Wire Sets 51044

Spark Plug Wires, StreeThunder, Spiro-Wound, 8mm, Black, Straight Boots, Chevy, Small Block, Set

Part Number: TAY-51044

4.47 out of 5 stars ( 15 )

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Champion Platinum Power Spark Plugs 3015

Spark Plug, Platinum Power, 14mm Thread, .708 in. Reach, Resistor, Buick, Chevy, Oldsmobile, Isuzu, GMC, Each

Part Number: CPN-3015

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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

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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

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Taylor Street Thunder Spark Plug Wire Sets 53005

Spark Plug Wires, StreeThunder, Spiro-Wound, 8mm, Black, Stock Boots, Chevy, Small Block, Set

Part Number: TAY-53005

4.73 out of 5 stars ( 15 )

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Standard Motor Coolant Temperature Sending Units TX3T

Sending Unit, Temperature, 3/8 in. NPT, Each

Part Number: SMP-TX3T

5.0 out of 5 stars ( 1 )

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MechMan High-Output Racing Alternators 8237320B

Alternator, Internal Regulator, 320 Amp, Black, Chevy, GMC, Each

Part Number: MEH-8237320B

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

Summit Racing™ 86 Series 8mm 300 Ohm Ignition Wires SUM-867830WS

Spark Plug Wires, 86 Series, 8mm, 300 Ohm, Blue, 12" Leads, OEM Spark Plug Boots With Heat Shields Installed, LS, V8, Set

Part Number: SUM-867830WS

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Edge Evolution CTS3 Programmers 85450-250

Computer Programmer, Evolution CTS3, Cadillac, Chevy, Buick, GMC, Pontiac, Gas, Each

Part Number: EGE-85450-250

3.0 out of 5 stars ( 2 )

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