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Holley EFI Main Power Harness

Holley
Original price $88.10 - Original price $88.10
Original price
$88.10
$88.10 - $88.10
Current price $88.10

This Harness is required with HP or Dominator ECUs. Includes, 13' long, 10 AWG main power harness, Qty. (2) 3/8" ring terminals and shrink tube (no...

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Original price $88.10 - Original price $88.10
Original price
$88.10
$88.10 - $88.10
Current price $88.10

7.3-LITER GODZILLA MAIN HARNESS WITH SMART COILS

Holley
Original price $449.95 - Original price $449.95
Original price
$449.95
$449.95 - $449.95
Current price $449.95

The Terminator X offers an advanced engine management solution specifically tailored for the formidable 7.3-liter Godzilla engine. Designed to unlo...

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Original price $449.95 - Original price $449.95
Original price
$449.95
$449.95 - $449.95
Current price $449.95

7.3-LITER GODZILLA MAIN HARNESS FOR STOCK COILS

Holley
Original price $449.95 - Original price $449.95
Original price
$449.95
$449.95 - $449.95
Current price $449.95

The Terminator X offers an advanced engine management solution specifically tailored for the formidable 7.3-liter Godzilla engine. Designed to unlo...

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Original price $449.95 - Original price $449.95
Original price
$449.95
$449.95 - $449.95
Current price $449.95

Holley EFI Ford Coyote Engine Main Harness W/ TI-VCT And Stock Coils (2011-2017)

Holley
Original price $666.95 - Original price $666.95
Original price
$666.95
$666.95 - $666.95
Current price $666.95

Introducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your...

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Original price $666.95 - Original price $666.95
Original price
$666.95
$666.95 - $666.95
Current price $666.95

Holley C-N-P Ignition Sub Harness (Big Wire)

Holley
Original price $223.16 - Original price $223.16
Original price
$223.16
$223.16 - $223.16
Current price $223.16

"Big Wire" Sub Harness- pre wired with 12ga power and grounds, for optimal performance!

Original price $223.16 - Original price $223.16
Original price
$223.16
$223.16 - $223.16
Current price $223.16

Holley EFI Unterminated 15' Flying Lead Main Harness

Holley
Original price $379.95 - Original price $379.95
Original price
$379.95
$379.95 - $379.95
Current price $379.95

The unterminated main harness comes with both J1A and J1B connectors full terminated with 15' of flying lead wiring. Features: 15’ long flying l...

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Original price $379.95 - Original price $379.95
Original price
$379.95
$379.95 - $379.95
Current price $379.95

Coyote Main Harness Connector Kit

Holley
Original price $133.95 - Original price $133.95
Original price
$133.95
$133.95 - $133.95
Current price $133.95

Introducing EFI Engine Connector Kits – From Holley EFI. With the latest addition to our ever-expanding Wiring Shop, our goal was to provide you wi...

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Original price $133.95 - Original price $133.95
Original price
$133.95
$133.95 - $133.95
Current price $133.95

Ford V8 Injector Harness

Holley
Original price $153.95 - Original price $153.95
Original price
$153.95
$153.95 - $153.95
Current price $153.95

Ford V8 Injector Harness for Ford USCAR / EV6 style Fuel Injectors (Evenly Spaced)

Original price $153.95 - Original price $153.95
Original price
$153.95
$153.95 - $153.95
Current price $153.95

Ford Modular 4 Valve EFI Harness Kit

Holley
Original price $1,178.95 - Original price $1,178.95
Original price
$1,178.95
$1,178.95 - $1,178.95
Current price $1,178.95

This wiring harness interfaces a Holley EFI ECU to a 4V Ford Modular engine. It is meant to be used in conjunction with an injector harness, a coil...

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Original price $1,178.95 - Original price $1,178.95
Original price
$1,178.95
$1,178.95 - $1,178.95
Current price $1,178.95

Ford Modular 2 Valve EFI Harness Kit

Holley
Original price $1,178.95 - Original price $1,178.95
Original price
$1,178.95
$1,178.95 - $1,178.95
Current price $1,178.95

This wiring harness interfaces a Holley EFI ECU to a 2V Modular Ford engine. It is meant to be used in conjunction with an injector harness, a coil...

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Original price $1,178.95 - Original price $1,178.95
Original price
$1,178.95
$1,178.95 - $1,178.95
Current price $1,178.95

Injector Driver Module, W/ Harness

Holley
Original price $532.95 - Original price $532.95
Original price
$532.95
$532.95 - $532.95
Current price $532.95

Introducing the Holley EFI Programmable 8 Channel Injector Driver Module. The ultimate solution for methanol burning engines that require a large s...

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Original price $532.95 - Original price $532.95
Original price
$532.95
$532.95 - $532.95
Current price $532.95

Universal MPFI Coil On Plug Main Harness

Holley
Original price $502.95 - Original price $502.95
Original price
$502.95
$502.95 - $502.95
Current price $502.95

This harness provides a plug and play upgrade solution for those seeking to convert to Coil-On-Plug. Additionally we have pre-installed a Power Tap...

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Original price $502.95 - Original price $502.95
Original price
$502.95
$502.95 - $502.95
Current price $502.95

V8 Over Manifold, Bosch Style Injector Harness

Holley
Original price $174.95 - Original price $174.95
Original price
$174.95
$174.95 - $174.95
Current price $174.95

V8 over Manifold, Bosch Style Connector Harness for Avenger EFI, HP EFI & Dominator EFI

Original price $174.95 - Original price $174.95
Original price
$174.95
$174.95 - $174.95
Current price $174.95

Unterminated Vehicle Harness For Digital Dash

Holley
Original price $139.95 - Original price $139.95
Original price
$139.95
$139.95 - $139.95
Current price $139.95

Unterminated Vehicle Harness For Digital Dash

Original price $139.95 - Original price $139.95
Original price
$139.95
$139.95 - $139.95
Current price $139.95

Terminated Vehicle Harness For Digital Dash

Holley
Original price $177.95 - Original price $177.95
Original price
$177.95
$177.95 - $177.95
Current price $177.95

Terminated Vehicle Harness For Digital Dash

Original price $177.95 - Original price $177.95
Original price
$177.95
$177.95 - $177.95
Current price $177.95

Digital Dash Service Harness

Holley
Original price $71.70 - Original price $71.70
Original price
$71.70
$71.70 - $71.70
Current price $71.70

Service replacement digital dash harness. Features: CANBus Connector Wiring USB Connector Wiring

Original price $71.70 - Original price $71.70
Original price
$71.70
$71.70 - $71.70
Current price $71.70

Can Adapter - Female 2 Pin To Male 4 Pin

Holley
Original price $40.95 - Original price $40.95
Original price
$40.95
$40.95 - $40.95
Current price $40.95

The Holley EFI Can Adapter/Power Harness adapts two pin Holley main harness CAN connectors to new style 4 pin CAN devices.

Original price $40.95 - Original price $40.95
Original price
$40.95
$40.95 - $40.95
Current price $40.95

Digital Dash I/O Adapter W/ Terminated Vehicle Harness

Holley
Original price $307.95 - Original price $307.95
Original price
$307.95
$307.95 - $307.95
Current price $307.95

I/O Adapter w/Terminated Vehicle Harness Features: Provides ten addiitonal inputs/outputs to the 7" digital dash Brings out connections to a wat...

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Original price $307.95 - Original price $307.95
Original price
$307.95
$307.95 - $307.95
Current price $307.95

Holley EFI Can Adapter/Power Harness

Holley
Original price $32.63 - Original price $32.63
Original price
$32.63
$32.63 - $32.63
Current price $32.63

The Holley EFI Can Adapter/Power Harness adapts two pin Holley main harness CAN connectors to new style 4 pin CAN devices.

Original price $32.63 - Original price $32.63
Original price
$32.63
$32.63 - $32.63
Current price $32.63

Digital Dash I/O Adapter W/ Unterminated Vehicle Harness

Holley
Original price $266.95 - Original price $266.95
Original price
$266.95
$266.95 - $266.95
Current price $266.95

I/O Adapter w/Unterminated Vehicle Harness Features: Provides ten addiitonal inputs/outputs to the 7" digital dash Brings out connections to a wa...

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Original price $266.95 - Original price $266.95
Original price
$266.95
$266.95 - $266.95
Current price $266.95

Holley EFI Ford Coyote TI-VCT Sub Harness (2013-2017)

Holley
Original price $307.95 - Original price $307.95
Original price
$307.95
$307.95 - $307.95
Current price $307.95

Introducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your...

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Original price $307.95 - Original price $307.95
Original price
$307.95
$307.95 - $307.95
Current price $307.95

Ford Coyote Coil Harness

Holley
Original price $179.95 - Original price $179.95
Original price
$179.95
$179.95 - $179.95
Current price $179.95

Coil Harness for 2011 to 2015 Ford Coyote (5.0L) Engines

Original price $179.95 - Original price $179.95
Original price
$179.95
$179.95 - $179.95
Current price $179.95

Holley EFI Main Power Harness For Coyote TI-VCT Applications

Holley
Original price $112.95 - Original price $112.95
Original price
$112.95
$112.95 - $112.95
Current price $112.95

Introducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your...

View full details
Original price $112.95 - Original price $112.95
Original price
$112.95
$112.95 - $112.95
Current price $112.95

Ford Coyote TI-VCT Coil Harness (2015.5-2017)

Holley
Original price $204.95 - Original price $204.95
Original price
$204.95
$204.95 - $204.95
Current price $204.95

Introducing Coyote Twin Independent Variable Cam Timing Control from Holley EFI! Do you have a coyote crate engine going in your dream car? Is your...

View full details
Original price $204.95 - Original price $204.95
Original price
$204.95
$204.95 - $204.95
Current price $204.95

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