2003 CHEVROLET SILVERADO-2500-HD Ignitions & Electrical

Spark Plug Wires, Ultra 40, Assembled, Spiral Core, 8.65mm, Blue, Straight, Chevy, Pontiac, 5.7L LS, Set

Part Number: MOR-73660

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 7, 2025 if ordered today

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Sensor, Coolant Temperature Sensor, Replacement, Each

Part Number: HLN-2CTS0001

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Estimated Ship Date: Oct 27, 2025 if ordered today

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170 Amp Racing Alternator

Part Number: MEH-8237170B

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Estimated Ship Date: Oct 28, 2025 if ordered today

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Ignition Coils, Flame-Thrower, Coil Pack Style, Epoxy, Female/Socket, Square, Black, 35,000 V, Buick, Cadillac, Chevy, GMC, Hummer, LS, Set of 8

Part Number: PNX-30848

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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A/C Clutch Cycle Switch

Part Number: UAC-SW10082C

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

Part Number: RNB-645-785

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Estimated Ship Date: Tomorrow

Spark Plug Wires, ThunderVolt, Spiro-Wound, 8.2mm, Black, Stock Boots, Chevy, GMC, 8.1L, Set

Part Number: TAY-82025

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Oct 30, 2025 if ordered today

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Oxygen Sensor, OE Style, Heated, Thread-In Mounting, Buick, Cadillac, Chevrolet, GMC, Pontiac, Saab, Saturn, Each

Part Number: DNP-234-4673

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Estimated Ship Date: Nov 4, 2025 if ordered today

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Spark Plug Wire Sets, Assembled, Solid Core, Black Ceramic Boots, Blue, 8.00mm Diameter, 12 in. Length, GM, V8, Set

Part Number: GRN-28-1629-CBBL

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Spark Plug Wire Sets, Assembled, Solid Core, Black, 8.00mm Diameter, Cadillac, Chevrolet, GMC, Hummer, Pontiac, V8, Set

Part Number: GRN-28-1629HTL

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Estimated Ship Date: Nov 10, 2025 if ordered today

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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

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Wiring Pigtails, 2-pin, Male, Black, for Hyundai, for Kia, Buick, Cadillac, Chevy, Dodge, Fiat, Genesis, GMC, Isuzu, Jeep, Saab, Saturn, Suzuki, Each

Part Number: SMP-S575

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Estimated Ship Date: Tomorrow

Spark Plug, Iridium, Tapered Seat, 14mm Thread, .708 in. Reach, Resistor, Each

Part Number: CPN-9402

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Spark Plug Wire Sets, Assembled, Solid Core, Black Boots, Blue Wires, 8.00mm Diameter, Cadillac, Chevrolet, GMC, Hummer, Pontiac, V8, Set

Part Number: GRN-28-1629HTBLB

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 10, 2025 if ordered today

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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: Oct 29, 2025 if ordered today

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Spark Plug Wire Sets, ProConnect, Assembled, Spiral Core, Coil Pack, Straight Plug Boots, Black, Buick, Cadillac, Chevrolet, GMC, Small Block LS, Set

Part Number: ACC-118064

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Estimated Ship Date: Tomorrow

Sensor, Vehicle Speed Sensor, Replacement, Each

Part Number: HLN-2VSS0042

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Wiring Pigtails, 2-pin, Male, Black, for use on Honda®, for Hyundai, for Nissan, BMW, Chevy, Chrysler, Dodge, Ford, GMC, Saab, Toyota, Volvo, Each

Part Number: SMP-S524

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

Part Number: RNB-645-631

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Safety Switch

Part Number: RNB-924-435

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Ignition Coil, Flame-Thrower, Coil Pack, Epoxy Construction, Black, Square, Chevy, GMC, Each

Part Number: PNX-30811

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Estimated Ship Date: Oct 28, 2025 if ordered today

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Wire Connectors, Oil Level/Multi-use Sensor Pigtail, 6 in., 2-pin, Female Connector, Black, White Wires, Duramax, Chevy, GMC, Each

Part Number: FLE-S0481

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Estimated Ship Date: Tomorrow

Spark Plug Wire Sets, Assembled, Solid Core, Black Boots, Red Wires, 8.00mm Diameter, Chevrolet, GMC, 8.1L, Set

Part Number: GRN-28-1712S-R

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Glow Plug Straps, GM, Pickup, Duramax Diesel, Pair

Part Number: RNB-904-109

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Wiring Harnesses, Fleece Performance, Outer Injector, External Connector Pigtail, 6 in. Long, Chevy, GMC, 2500, 3500, HD, 6.6L, Duramax, LB7, Each

Part Number: FLE-S0453

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Estimated Ship Date: Tomorrow