Filters
Holley EFI 554-142
Injector Driver Module, w/ Harness; Holley EFI Programmable 8 Channel Injector Driver Module
Holley EFI 558-455
Holley EFI Transmission Control Harness - 2009+ GM 4L60; For 2009+ GM 4L60
Holley EFI 558-110
Holley EFI Ford Coyote Engine Main Harness w/ Ti-VCT and Stock Coils (2011-2017); 2011-2017 Ti-VCT Coyote Engines
Holley EFI 558-113
Ford Modular 2V and 4V Main Harness for use with Holley Smart Coils; Main Harness for 1999-2004 2 & 4 Valve Ford Modular (4.6 & 5.4L) Engines for use with Holley Smart Coils
Holley EFI 558-115
Gen III Hemi Main Harness Early w/ TPS and Idle Air Control Connections; Gen III HEMI Main Harness w Throttle Position Sensor & Idle Air Control, For use with Cable Throttle Body.
Holley EFI 558-116
Gen III HEMI Main Harness Late w/ TPS and Idle Air Control Connections; Gen III HEMI Main Harness w/Throttle Position Sensor & Idle Air Control, For Late Crank & Cam Sensors, for HP EFI & Dominator EFI, For use with Cable Throttle Body.
Holley EFI 558-122
Holley EFI Coyote Ti-VCT Main Harness for Holley EFI HP Smart Coils (2011-2017); Coyote Ti-VCT Main Harness for 2011-2017 Coyote Engines using Holley EFI HP smart coils
Holley EFI 558-125
Holley EFI Ford Coyote Ti-VCT Sub Harness (2013-2017); Coyote Ti-VCT Sub Harness for 2013-2017 Coyote Engines with Stock Camshafts
Holley EFI 558-321
LS COIL HARNESSES; Factory replacement coil harness for stock LS coils, does not fit LS1 or LS6 Coils.
Holley EFI 558-454
CAN Adapter Harness, 12'; 12' Male to Female CAN Adapter Harness