2003 GMC Topkick Ignition Relays, Sensors & Switches
Select Your Submodel
-
NTK®Ignition Knock SensorGMC C6500 Topkick / C7500 Topkick 8.1L 2003, Ignition Knock Sensor by NTK®. If you want to restore the original performance of your vehicle's ignition system, this product is what you need. Engineered to stringent OE specifications, it...Manufactured to restore your vehicle’s ignition systemDesigned with your specific vehicle in mind$38.30 - WVE®Ignition Knock SensorGMC C6500 Topkick / C7500 Topkick 8.1L 2003, Ignition Knock Sensor by WVE®. Replace your worn-out or faulty component with this quality replacement from WVE. This product is designed and tested to ensure the ultimate in durability and...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$41.29
- gpd®Ignition Knock SensorGMC Topkick 8.1L 2003, Ignition Knock Sensor by gpd®. If you want to restore the original performance of your vehicle's ignition system, this product is what you need. Engineered to stringent OE specifications, it is sure to fit and...Manufactured to restore your vehicle’s ignition systemDesigned with your specific vehicle in mind$27.83
- PerTronix®Wire Harness and CapacitorGMC Topkick 6.6L / 8.1L 2003, Wire Harness and Capacitor by PerTronix®. From replacement wiring harness to adjustable vacuum advance canisters, lockout kits and mechanical advance kits, they have the parts to get your HEI distributor...Digital performance solutions give you more power and more features in a smaller packageInnovative technology for superior operation and rugged dependability under harsh conditions$30.95
- Dorman®OE Solutions™ Diesel Glow Plug RelayGMC Topkick 6.6L 2003, OE Solutions™ Diesel Glow Plug Relay by Dorman®. Diesel Glow Plug Relays regulate the current going to the vehicle's glow plugs. Replacement is constructed of quality materials and tested to meet product...Manufactured to restore your vehicle’s ignition systemDesigned with your specific vehicle in mind$42.00 - $104.10
- Dorman®OE Solutions™ Ignition SwitchGMC Topkick 2003, OE Solutions™ Ignition Switch by Dorman®. An essential replacement item, Dorman's Ignition Power Switch enables your engine to turn over upon startup, restoring drivability. It also unlocks the power accessories. The...This part has undergone a rigorous quality inspection to ensure high qualityIncludes bezel for a complete repair$59.48
- Standard®Diesel Glow Plug StrapGMC Topkick 6.6L with 12 Volt System 2003, Diesel Glow Plug Strap by Standard®. If you want to restore the original performance of your vehicle's ignition system, this product is what you need. Engineered to stringent OE specifications,...Manufactured to restore your vehicle’s ignition systemDesigned with your specific vehicle in mind$26.10
- WVE®Ignition SwitchGMC C4500 Topkick / C5500 Topkick / C6500 Topkick /... 2003, Ignition Switch by WVE®. Replace your worn-out or faulty component with this quality replacement from WVE. This product is designed and tested to ensure the ultimate in...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$86.65
