Filters
Holley EFI 558-304
HEI GM Small Cap Ignition Harness; HEI Ignition Harness for Avenger EFI, HP EFI & Dominator EFI
Holley EFI 558-307
Universal Coil On/Near Plug Harness; For use with Holley® HP and Dominator ECUs and other EFI systems
Holley EFI 558-400
Connector J1A/B Input/Outputs Auxiliary Harness; For Dominator, HP, Terminator X and Terminator X Max
Holley EFI 558-402
Dominator EFI Auxiliary Harness; Dominator EFI Connector J2B Auxiliary Harness
Holley EFI 558-405
Holley EFI Transmission Control Harness - For 1996-2008 GM 4L60E and 4L80E; Fits Pre-2009 4L60E & 4L80E Transmissions
Holley EFI 550-606
HP EFI ECU & Harness Kits; Universal FORD V8 Multi-Point Fuel Injection, Includes Bosch Oxygen Sensor, and Ford V8 Injector Harness.
Holley EFI 558-455
Holley EFI Transmission Control Harness - 2009+ GM 4L60; For 2009+ GM 4L60
Holley EFI 558-485
Sniper 2 EFI M8 8' Extension Harness; Compatible with Sniper 2 EFI M8 Accessories
Holley EFI 558-108
Ford 2V and 4V Modular Main Harness; Ford 2V & 4V Modular Main Harness, For HP EFI & Dominator EFI
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