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  • 558-212.jpg
    Holley EFI
    Injector Harness; Evenly Spaced; USCAR/EV6 Style Injectors;
    $143.95
    $160.00
    $143.95
    Ford V8 Injector Harness for Ford USCAR / EV6 style Fuel Injectors (Evenly Spaced)
  • 558-211.jpg
    Holley EFI
    Fuel Injection Harness
    $162.00
    $162.00
    $162.00
    An Injector Harness is required and Holley offers two. The harness with USCAR/Stock injector connectors will cover most applications that are using the factory injectors. The other harness is for t...
  • 558-210.jpg
    Holley EFI
    Injector Harness; Fits w/Gen III Hemi V8 EFI; Stock/USCAR Style Injector;
    $162.00
    $162.00
    $162.00
    An Injector Harness is required and Holley offers two. The harness with USCAR/Stock injector connectors will cover most applications that are using the factory injectors. The other harness is for t...
  • 558-208.jpg
    Holley EFI
    Fuel Injection Wire Harness
    $368.00
    $368.00
    $368.00
    Unterminated 24 injector MPFI harness Terminated at injector connectors (Bosch style). Harness must be assembled and require crimping Metripak 150 connectors. Includes all connectors, pins, termina...
  • 558-209.jpg
    Holley EFI
    Injector Harness; Fits w/HP/Dominator EFIs;
    $204.00
    $204.00
    $204.00
    Ford V8 Injector Harness for HP EFI & Dominator EFI
  • 558-206.jpg
    Holley EFI
    Fuel Injection Wire Harness
    $218.00
    $218.00
    $218.00
    Fuel Injection Wire Harness; 2x4 bbl TBI; For HP EFI/Dominator EFI Fuel Injection Systems;
  • 558-207.jpg
    Holley EFI
    Fuel Injection Wire Harness
    $241.95
    $269.00
    $241.95
    Unterminated 16 injectors MPFI harness Terminated at injector connectors (Bosch style). Harness must be assembled and require crimping Metripak150 connectors. Includes all connectors, pins, termina...
  • 558-203.jpg
    Holley EFI
    Fuel Injection Wire Harness
    $187.00
    $187.00
    $187.00
    This is a replacement 8 cylinder injector harness. It connects the main harness to the fuel injectors. It routes the wires under the plenum.
  • 558-201.jpg
    Holley EFI
    LSx Fuel Injection Harness
    $138.95
    $155.00
    $138.95
    Holley products have been the undisputed leader in fuel systems for over 100 years. Holley carburetors power every NASCAR Sprint Cup team and every NHRA Pro–Stock champion. Holleys products include...
  • 558-202.jpg
    Holley EFI
    Fuel Injection Wire Harness
    $109.00
    $109.00
    $109.00
    This is a replacement 8 cylinder injector harness. It connects the main harness to the fuel injectors. It routes the wires under the plenum.
  • injectorharness.jpg
    Holley EFI
    Bosch Style Connector Harness
    $162.95
    $182.00
    $162.95
    Bosch Style Connector Harness; V8 Over Manifold; For Avenger EFI/HP EFI/Dominator EFI Systems;
  • 558-132_01.jpg
    Holley EFI
    Terminator X Sub-Harness; For Use w/Gen III Hemi VVT/SRV;
    $119.95
    $134.00
    $119.95
    2009+ Gen III Hemi engines rolled off the showroom floor with Variable Valve Timing (VVT). Now, both Terminator X and Terminator X Max ECUs will allow you to control and tune the VVT with the use o...
  • 558-131_01.jpg
    Holley EFI
    Terminator X Sub-Harness; For Use w/Gen III Hemi VVT;
    $105.00
    $105.00
    $105.00
    2009+ Gen III Hemi engines rolled off the showroom floor with Variable Valve Timing (VVT). Now, both Terminator X and Terminator X Max ECUs will allow you to control and tune the VVT with the use o...
  • 558-107.jpg
    Holley EFI
    Fuel Injection Harness
    $688.00
    $688.00
    $688.00
    Gen III HEMI Harness with TPS and Idle Air Control Connections. This wiring harness interfaces a Holley EFI ECU to a Gen III HEMI engine with an aftermarket cable actuated throttle body. It is mean...
  • 558-106.jpg
    Holley EFI
    Fuel Injection Harness
    $688.00
    $688.00
    $688.00
    Gen III HEMI Harness with TPS and Idle Air Control Connections. This wiring harness interfaces a Holley EFI ECU to a Gen III HEMI engine with an aftermarket cable actuated throttle body. It is mean...
  • 558-112.jpg
    Holley EFI
    Terminator® Throttle Body Harness; For Use w/GM LSX w/58x Reluctor Wheel;
    $585.00
    $585.00
    $585.00
    Main Engine harness intended for use with Terminator X, X Max, Terminator, HP, and Dominator ECUs when using a Terminator or Terminator Stealth style Throttle Body Injection unit on a Gen 4 58x LS ...
  • 558-111.jpg
    Holley EFI
    Terminator® Throttle Body Harness; For Use w/GM LSX w/24x Reluctor Wheel;
    $573.00
    $573.00
    $573.00
    Main Engine harness intended for use with Terminator X, X Max, Terminator, HP, and Dominator ECUs when using a Terminator or Terminator Stealth style Throttle Body Injection unit on a Gen 3 24X LS ...
  • 558-108.jpg
    Holley EFI
    Fuel Injection Harness
    $674.00
    $674.00
    $674.00
    Injector Harness; Main Harness; For HP Or Dominator EFI; For Use w/94-04 Ford Modular Engines;
  • 558-105.jpg
    Holley EFI
    Unterminated Universal Main Harness; For HP EFI/Dominator EFI Systems;
    $445.95
    $496.00
    $445.95
    Holley products have been the undisputed leader in fuel systems for over 100 years. Holley carburetors power every NASCAR Sprint Cup team and every NHRA Pro–Stock champion. Holleys products include...
  • largemainharness558_104.jpg
    Holley EFI
    Universal Multi-Point Main Harness
    $446.95
    $497.00
    $446.95
    Universal Multi-Point Main Harness; For Avenger EFI/HP EFI/Dominator EFI Systems;
  • mainharness.jpg
    Holley EFI
    Fuel Injection Wire Harness
    $593.00
    $593.00
    $593.00
    This harness has been designed to interface with 58x crank and 4x cam sensors. These engines are commonly found in 2006+ Year Model vehicles with LS variants such as the: LS2,LS3,LS7,L76,L92, and L98.
  • 558-101.jpg
    Holley EFI
    TPI/Stealth Ram Main Harness; For Avenger EFI/HP EFI/Dominator EFI Systems;
    $514.00
    $514.00
    $514.00
    TPI/Stealth Ram Main Harness; For Avenger EFI/HP EFI/Dominator EFI Systems;
  • 558-102.jpg
    Holley EFI
    Fuel Injection Wire Harness
    $532.95
    $593.00
    $532.95
    Fuel Injection Wire Harness; Fits w/1997-2004 LS 1/6 Engines w/24x Crank/1x Cam Sensor And w/HP EFI/ Dominator EFI Systems;
  • 554-143_11888.jpg
    Holley EFI
    Injector Driver Module; Programmable 8 Channel; w/o Harness;
    $507.00
    $507.00
    $507.00
    Introducing the Holley EFI Programmable 8 Channel Injector Driver Module. The ultimate solution for methanol burning engines that require a large set of secondary injectors. The Holley EFI Injector...

Showing 2545 -2568 of 4390 items