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

Taylor ThunderVolt 8.2mm Spark Plug Wire Sets 86246

Wire, ThunderVolt, Spiral Core, 8.2mm, Red, Coil Pack, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Saab

Part Number: TAY-86246

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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MechMan Elite Series Alternators 8206320B

MechMan Elite Series Alternators 8206320B

Alternators and Generators, Elite Series Alternators, 12 V, 320 amp, Serpentine, Gloss Black, Buick, Cadillac, Chevy, GMC, Hummer, Olds, Pontiac, Each

Part Number: MEH-8206320B

Not Yet Reviewed

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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 )

Estimated Ship Date: Tomorrow

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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 )

Estimated Ship Date: Tomorrow

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Standard Motor T-Series Knock Sensors KS116T

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

Part Number: SMP-KS116T

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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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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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

Not Yet Reviewed

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Powermaster PowerMax Starters 19201

Starter, PowerMAX, Full Size, Standard Rotation, Chrome, Chevy, GMC, Pontiac, Small Block LS, Each

Part Number: PWM-19201

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 20, 2026 if ordered today

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Estimated Ship Date: Jan 20, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Powermaster PowerMax Starters 19109

Not Yet Reviewed

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MSD Blaster OEM Replacement Coils 826383

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

Part Number: MSD-826383

Not Yet Reviewed

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10/20 amps Bosch Relay 332201107

Relay, 12 V, 10/20 amps, Single Pole, Spade Terminals, Each

Part Number: BCH-0332201107

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Autolite Copper Core Spark Plugs 5245

Spark Plug, Copper Core, Resistor, 14mm x 1.25, Tapered Seat, 0.679 in, Reach, Each

Part Number: ATL-5245

Not Yet Reviewed

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ACCEL Super Coils 140043

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

Part Number: ACC-140043

Not Yet Reviewed

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Eddie Motorsports Ball Milled Billet Coil Covers MS109-04HL

Coil Covers, Aluminum, Matte Black Powdercoated with Ball Milled Grooves, Chevy, LS, With Oil Fill Cutout, Pair

Part Number: EMS-MS109-04HL

2.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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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 )

Estimated Ship Date: Tomorrow

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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 )

Estimated Ship Date: Tomorrow

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Standard Motor Power Window Switches DWS-226

Power Window Switch, OEM, Stock Activation, Plastic, Chevy, GMC, Each

Part Number: SMP-DWS-226

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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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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Dorman Turn Signal Switches 2330856

Turn Signal Switches, Multi-function, With Cruise Control, Labeled, Wiring Included, Plastic, GM, Each

Part Number: RNB-2330856

Not Yet Reviewed

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ACDelco Replacement Switches 15143597

Electrical Switches, ACDelco Replacement Switches, Fog Lamp and Cargo Lamp Switch, Cadillac, Chevy, GMC, Each

Part Number: ADO-D7096C

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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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 )

Estimated Ship Date: Tomorrow

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MechMan High-Output 6-Phase Alternators 8237240

for aftermarket Bracket Setups, -Motor swaps- for aftermarket Bracket Setups LS truck-suv, -Motor swaps-LS truck\-suv

Part Number: MEH-8237240

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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ACDelco Wiring Connectors 88987997

Wiring Pigtails, Replacement, Female Wire Connector Type, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Saturn, Each

Part Number: ADO-PT1799

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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MechMan Dual Bracket Kits D201

Alternators, Dual Bracket, 400 Amps, Black, Anodized, 12 V, Chevy, GMC, Kit

Part Number: MEH-D201

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Granatelli Motor Sports GM High Performance Coil Near Plug Wire Sets 28-1629HTRB

Spark Plug Wires, Coil-Near-Plug, Red, GM, LS, Set

Part Number: GRN-28-1629HTRB

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 27, 2026 if ordered today

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Estimated Ship Date: Jan 27, 2026 if ordered today