Filters
Holley EFI 558-321
LS COIL HARNESSES; Factory replacement coil harness for stock LS coils, does not fit LS1 or LS6 Coils.
Holley EFI 558-418
Gen III HEMI Drive-By-Wire Harness - Late pedal with the compact Molex connector ('08-2012 Up cars, '07- 2012 Trucks) Only the 0459 1847 factory drive-by-wire throttle body has been pre-calibrated and approved for use with these harnesses.
FAST - Fuel Air Spark Technology 301106
XFI Main Harness for Rear Engine Dragster and Boats; XFI Main Harness designed with short leads to ease XFI installation into rear engine dragsters and boats which require shorter wires. This in turn typically will save the installer time on having to cut, strip and re-crimp leads.
Holley EFI 558-420
Terminator EFI Input/Output Kit; This kit contains 4 extra input wires and 1 extra output wire that the base Terminator EFI harness does not contain.
FAST - Fuel Air Spark Technology 301108
XFI Main Harness for GM LS1, LS2, LS3, LS6, LS7, LS9 and LS Trucks; This XFI Main Harness is designed to connect engines that feature GM LS style sensors to our XFI ECU.
Holley EFI 558-429
Holley EFI GM Drive-By-Wire Harness - Early Truck; Drive-By-Wire Harness - Early Truck
Holley EFI 558-454
CAN Adapter Harness, 12'; 12' Male to Female CAN Adapter Harness