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

ICT Billet Wiring Harness Extensions WECKP30-36

Wire Extension LS Gen 3 White 3-Wire CKP Crankshaft Position Sensor Connector

Part Number: ICB-WECKP30-36

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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Granatelli Motor Sports GM High Performance Coil Near Plug Wire Sets 28-1545-CBBL

Spark Plug Wire Sets, Assembled, Solid Core, Black Ceramic Boots, Blue, 8.00mm Diameter, 10 in. Length, Cadillac, Chevrolet, GMC, Hummer, V8, Set

Part Number: GRN-28-1545-CBBL

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Holstein Parts Oil Pressure Switches 2OPS0031

Oil Pressure Switch, Replacement, Plastic/Diecast, Black/Silver, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Pontiac, Each

Part Number: HLN-2OPS0031

Not Yet Reviewed

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Standard Motor Coolant Temperature Sensors TX3K

Coolant Temperature Sensor, Replacement, for use on Honda®, AM General, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Jeep, Olds, Pontiac, Each

Part Number: SMP-TX3K

Not Yet Reviewed

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Haltech Nexus Rebel LS Throttle Adapter Harnesses HT-186505

Harness Adapter, Nexus Rebel LS, DBW, 6-Pin, Chevrolet, LS, Each

Part Number: HTH-HT-186505

Not Yet Reviewed

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Taylor Spiro-Pro Spark Plug Wire Sets 74044

Spark Plug Wires, Spiro-Pro, 8mm, Black, Straight Boots, Chevy, Pontiac, LS1, LS6, Set

Part Number: TAY-74044

Not Yet Reviewed

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Caspers Electronics TPS Breakout Adapters 108103FIT

Caspers Electronics TPS Breakout Adapters 108103FIT

Breakout Adapter, FiTech to Late GM Adapter, Each

Part Number: CEI-108103FIT

4.5 out of 5 stars ( 2 )

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Standard Motor Knock Sensors KS116

Knock Sensor, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Pontiac, Each

Part Number: SMP-KS116

4.33 out of 5 stars ( 3 )

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MechMan S Series Alternators 8237170

170 amp high output racing alternator for GM LS brackets

Part Number: MEH-8237170

5.0 out of 5 stars ( 3 )

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MechMan Elite Series Cast Alternators 8206400-YELL

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

Part Number: MEH-8206400-YELL

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

ACDelco ABS Control Modules 19244894

ABS Control Module, Chevrolet/GMC, 6.0/6.6/8.1L, Each

Part Number: ADO-19244894

Not Yet Reviewed

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NGK Resistor Spark Plug Wire Sets 51430

Spark Plug Wires, Resistor, 7mm, Blue, Stock Boots, Cadillac, Chevrolet, GMC, Hummer, Set

Part Number: NGK-51430

Not Yet Reviewed

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FAST TPS Adapter Harnesses 308022

Harness Adapter, Early to Late GM TPS, Each

Part Number: FST-308022

5.0 out of 5 stars ( 5 )

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Granatelli Motor Sports GM High Performance Coil Near Plug Wire Sets 28-1811-CBR

Spark Plug Wire Sets, Assembled, Solid Core, Black Ceramic Boots, Red, 8.00mm Diameter, 8 in. Length, LS, V8, Set

Part Number: GRN-28-1811-CBR

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

ACDelco GM Genuine Parts HVAC Blower Control Modules 19260762

Blower Motor Resistors, GM OE HVAC Blower Control Modules, Buick, Cadillac, Chevrolet, GMC, Isuzu, Oldsmobile, Saab, Each

Part Number: ADO-15-81773

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Summit Racing™ 86 Series 8mm 300 Ohm Ignition Wires SUM-867828RWS

Spark Plug Wires, 86 Series, 8mm, 300 Ohm, Red, 9" Leads, OEM Spark Plug Boots With Heat Shields Installed, LS, V8, Set

Part Number: SUM-867828RWS

Not Yet Reviewed

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MSD Blaster OEM Replacement Coils 8264

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

Part Number: MSD-8264

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Today

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ACDelco Replacement Wiring Harness Connectors 12101937

Wiring Harness Connector, Replacement, Multipurpose, Male, 2-pin, Gray, Each

Part Number: ADO-PT209

5.0 out of 5 stars ( 1 )

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NTK Oxygen Sensors 21555

Oxygen Sensor, 4-Wire, 0-1 V, Chevy, GMC, 6.0, 7.0, 8.1L, Each

Part Number: NGK-21555

4.5 out of 5 stars ( 2 )

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Dorman Power Window Switches 920-023

Power Window Switchs, Dorman, Master Window Switch Assembly, Plastic, Black, 5-button control, Male Terminal, 62-pin, Illuminated, Chevy GMC, Each

Part Number: RNB-920-023

Not Yet Reviewed

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Top Street Performance MAP Sensor Harness Adapters 81033

Map Sensor Adapter, Convert LS1/LS2 Map Sensor to LS3 Sensor, Harness Adapter, Chevy, LS, Each

Part Number: TSN-81033

Not Yet Reviewed

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Standard Motor T-Series Ignition Coils UF271T

Ignition Coil, T-Series, Coil Pack Style, Mounting Bracket, Chevrolet, GMC, Isuzu, Workhorse, Workhorse Custom Chassis, Each

Part Number: SMP-UF271T

Not Yet Reviewed

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ACDelco ABS Control Modules 19417940

ABS Control Module, Chevrolet/GMC, 6.0/6.6/8.1L, Each

Part Number: ADO-19417940

4.0 out of 5 stars ( 1 )

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Granatelli Motor Sports GM High Performance Coil Near Plug Wire Sets 28-1811-CBB

Spark Plug Wire Sets, Assembled, Solid Core, Black Ceramic Boots, Black, 8.00mm Diameter, 8 in. Length, LS, V8, Set

Part Number: GRN-28-1811-CBB

Not Yet Reviewed

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