2003 CADILLAC Ignitions & Electrical

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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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

4.67 out of 5 stars ( 3 )

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Denso Oxygen Sensors 234-4209

Oxygen Sensor, Universal, Heated, Thread-In Mounting, Each

Part Number: DNP-234-4209

3.6 out of 5 stars ( 5 )

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Dorman Power Window Switches 920-020

Power Window Switch, Replacement, Driver Master Switch, With Power Folding Mirrors, 8 Button, Cadillac, Chevy, GMC, Each

Part Number: RNB-920-020

5.0 out of 5 stars ( 1 )

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Dorman Headlight Switches 901-142

Headlight Switch, OEM Replacement, Chevy, GMC, Each

Part Number: RNB-901-142

5.0 out of 5 stars ( 2 )

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Summit Racing™ Street / Strip Series 8mm 300 Ohm Ignition Wires SUM-867830WS

Summit Racing™ Street / Strip Series 8mm 300 Ohm Ignition Wires SUM-867830WS

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

Part Number: SUM-867830WS

Not Yet Reviewed

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ACDelco Spark Plug Wire Sets 19417606

Spark Plug Wire Sets, Assembled, RFI Suppression, Black, Cadillac, Chevrolet, GMC, Hummer, Set

Part Number: ADO-19417606

Not Yet Reviewed

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NTK Oxygen Sensors 21516

Oxygen Sensor, 4-Wire, 0-1 V, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, V6/V8, Each

Part Number: NGK-21516

5.0 out of 5 stars ( 1 )

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Standard Motor Vehicle Speed Sensors SC131

Vehicle Speed Sensor, OEM Replacement, Chevy, GMC, Each

Part Number: SMP-SC131

Not Yet Reviewed

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ATP Automatic Transmission Wiring Harnesses CE-9

Automatic Transmission Wiring Harnesses, Replacement, Avanti, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Each

Part Number: ATP-CE-9

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

Holstein Parts Crankshaft Sensors 2CRK0065

Sensor, Engine Crankshaft Position Sensor, Replacement, Each

Part Number: HLN-2CRK0065

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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Edelbrock Max-Fire Ultra-Spark 50 Spark Plug Wire Sets 22717

Spark Plug Wires, Max-Fire Ultra-Spark 50, Spiral Core, 50 ohms, 8.5mm, Red, Trucks, Buick, Cadillac, Chevy, GMC, Hummer, Saab, Small Block LS, Set

Part Number: EDL-22717

3.0 out of 5 stars ( 2 )

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ACDelco Conventional Resistor Spark Plugs 19354421

Spark Plug, Conventional Resistor, Nickel Alloy Tip, Tapered Seat, 14mm Thread, Ford, Jaguar, Peugeot, Volvo

Part Number: ADO-R42LTS

Not Yet Reviewed

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Standard Motor Power Window Switches DWS-220

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

Part Number: SMP-DWS-220

4.67 out of 5 stars ( 12 )

Estimated Ship Date: Today

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Standard Motor Coolant Temperature Sensors TX89T

Sensor, Coolant Temperature, Brass, Natural, Chevrolet, Pontiac. Buick, Saturn, Each

Part Number: SMP-TX89T

Not Yet Reviewed

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Eddie Motorsports Ball Milled Billet Coil Covers MS109-04M

Coil Covers, Aluminum, Machined, Chevy, LS, With Cutout, Pair

Part Number: EMS-MS109-04M

3.0 out of 5 stars ( 1 )

Estimated Ship Date: May 27, 2026 if ordered today

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Estimated Ship Date: May 27, 2026 if ordered today

35 amps ACDelco Replacement Relay 13503103

Relay, Replacement, 12 V, 35 amps, 5 Male Spade Terminals, Buick, Cadillac, Chevy, GMC, Hummer, Pontiac, Each

Part Number: ADO-15-81106

5.0 out of 5 stars ( 1 )

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MSD Street Fire Coils 5510

Ignition Coil, Street Fire, Coil Pack, Black, Buick, Chevy, GMC, Each

Part Number: MSD-5510

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Apr 28, 2026 if ordered today

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Estimated Ship Date: Apr 28, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

MSD Street Fire Coils 55108

4.25 out of 5 stars ( 30 )

Estimated Ship Date: Today

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Standard Motor Wiring Connectors S-553

Wiring Pigtails, 2-pin, Male, Black, for use on Acura®, for use on Honda®, for Nissan, Buick, Cadillac, Chevy, Chrysler, Isuzu, Jeep, Toyota, Each

Part Number: SMP-S553

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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ACDelco Remanufactured Starters 89018123

Starter, Stock Style, Standard Rotation, Black/Natural, Buick, Cadillac, Chevy, GMC, Isuzu, Saab, Each

Part Number: ADO-323-1644

5.0 out of 5 stars ( 1 )

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Dorman Battery Boxes and Trays 00097

Tray, Battery, Steel, Black, Cadillac, Chevrolet, GMC, Each

Part Number: RNB-00097

Not Yet Reviewed

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Kooks Headers Spark Plug Wire Sets 750204

Spark Plug Wire, 10mm Spark Plug Wires (8 pc. Set). Grey with Black Boots. LSX Truck

Part Number: KOK-750204

Not Yet Reviewed

Estimated Ship Date: Jun 12, 2026 if ordered today

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Estimated Ship Date: Jun 12, 2026 if ordered today

Edelbrock Max-Fire Ultra-Spark 50 Spark Plug Wire Sets 22715

Spark Plug Wires, 8.5mm, Red, Short 9 in. Length, Set

Part Number: EDL-22715

4.0 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Dorman Battery Boxes and Trays 00085

Tray, Battery, Steel, Rubber, Cadillac, Chevrolet, GMC, Each

Part Number: RNB-00085

5.0 out of 5 stars ( 4 )

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