Performance EFI System Wiring Harnesses
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Fast®XIM™ Ignition Control Module w/ Harness (GM Small Block Gen III) (301311)XIM™ Ignition Control Module w/ Harness by Fast®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Allows XFI™ Fuel Injection to be used on popular distributor-less ignition applicationsWater and heat resistant, billet aluminum enclosure designed for under-hood installation$845.95 - Fast®XR-1A Ignition Coil Harness (Ford Coyote) (30367)XR-1A Ignition Coil Harness by Fast®. Designed utilizing the latest technology, this product by Fast features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$273.95
- Holley®24x Terminator™ TBI Main Harness (558-128)24x Terminator™ TBI Main Harness (558-128) by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds,...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$489.95
- Holley®Auxiliary Harness (558-403)Auxiliary Harness by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From start...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$139.95
- Holley®Auxiliary Harness (558-404)Auxiliary Harness by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From start...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$169.95
- Holley®Auxiliary Harness (558-402)Auxiliary Harness by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From start...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$139.95
- Holley®Auxiliary Harness (558-401)Auxiliary Harness by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From start...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$199.95
- Holley®Can Extension Harness (558-424)Can Extension Harness by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$44.95
- Holley®Can Extension Harness (558-425)Can Extension Harness by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$49.95
- Holley®Can Extension Harness (558-426)Can Extension Harness by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$59.95
- Holley®Can Extension Harness (558-428)Can Extension Harness by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$39.95
- Holley®Closed Loop Wiring Harness for Digital 2 bbl Pro-Jection (534-56)Closed Loop Wiring Harness for Digital 2 bbl Pro-Jection by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection,...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$37.12
- Holley®Dominator™ EFI Can Adapter/Power Harness (558-430)Dominator™ EFI Can Adapter/Power Harness by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds,...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$31.83
- Holley®Dominator™ EFI Drive-By-Wire Dual Throttle Body Harness (558-450)Dominator™ EFI Drive-By-Wire Dual Throttle Body Harness by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection,...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$279.95
- Holley®Dominator™ EFI Ford 4R70W/4R75W Transmission Control Harness (558-470)Dominator™ EFI Ford 4R70W/4R75W Transmission Control Harness (558-470) by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$209.95
- Holley®Dominator™ EFI Main Harness (558-118)Dominator™ EFI Main Harness by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more....Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$519.95
- Holley®Dominator™ EFI Main Harness (558-117)Dominator™ EFI Main Harness by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more....Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$489.95
- Holley®Drive-By-Wire Harness (558-422)Drive-By-Wire Harness (558-422) by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$219.95
- Holley®Drive-By-Wire Harness Kit (558-429)Drive-By-Wire Harness Kit by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more....Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$214.95
- Holley®Drive-By-Wire Harness Kit (558-406)Drive-By-Wire Harness Kit by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more....Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$214.95
- Holley®Dual Drive-By-Wire Harness (558-411)Dual Drive-By-Wire Harness by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more....Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$279.95
- Holley®ECU and Harness Kit (550-619N)ECU and Harness Kit by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$3,805.95
- Holley®ECU and Harness Kit (550-619)ECU and Harness Kit by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$3,566.95
- Holley®ECU and Harness Kit (550-617N)ECU and Harness Kit (550-617N) by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much...Plug and play with factory sensors; Crank, Cam, TPS, Coolant Temp, etcPlug and play with factory actuators; Coils, Injectors, IAC$2,870.95
- Holley®ECU and Harness Kit (550-616)ECU and Harness Kit (550-616) by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more....Plug and play with factory sensors; Crank, Cam, TPS, Coolant Temp, etcPlug and play with factory actuators; Coils, Injectors, IAC$2,657.95
- Holley®ECU and Harness Kit (550-616N)ECU and Harness Kit (550-616N) by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much...Plug and play with factory sensors; Crank, Cam, TPS, Coolant Temp, etcPlug and play with factory actuators; Coils, Injectors, IAC$2,870.95
- Holley®ECU and Harness Kit (550-617)ECU and Harness Kit (550-617) by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more....Plug and play with factory sensors; Crank, Cam, TPS, Coolant Temp, etcPlug and play with factory actuators; Coils, Injectors, IAC$2,657.95
- Holley®EFI Harness Kit (558-502)EFI Harness Kit by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From start to...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$749.95
- Holley®EFI Harness Kit (558-503)EFI Harness Kit by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From start to...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$659.95
- Holley®EFI Harness Kit (558-504)EFI Harness Kit by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From start to...Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$659.95
