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  • 558-305.jpg
    Holley EFI
    TFI Ignition Harness; For Use w/Avenger EFI/HP EFI/Dominator EFI Systems;
    $96.66
    $108.00
    $96.66
    TFI Ignition Harness; For Use w/Avenger EFI/HP EFI/Dominator EFI Systems;
  • 558-304.jpg
    Holley EFI
    HEI Ignition Harness; Small Cap;
    $41.17
    $45.74
    $41.17
    HEI Ignition Harness; Small Cap;
  • 558-303.jpg
    Holley EFI
    Magnetic Pickup Ignition Harness
    $76.72
    $85.24
    $76.72
    Magnetic Pickup Ignition Harness; For HP EFI/Dominator EFI Systems; Shielded; Unterminated;
  • 558-302.jpg
    Holley EFI
    Tach Input Ignition Adapter
    $19.50
    $19.50
    $19.50
    Tach Input Ignition Adapter; For Use On Applications Using A CD Box; Plugs Into [Ignition] Connector On Main Harness; Yellow/Black Lead Connects To [Tach Out] Terminal;
  • 558-217_01.jpg
    Holley EFI
    HolleySport EV1 Milspec Injector Harness
    $723.00
    $723.00
    $723.00
    The Holley Sport EV1 Milspec injector harness utilizes Raychem DR-25 heat shrink tubing and transitions, providing protection from extreme temperatures and external contaminations that frequently c...
  • 558-216_0118330.jpg
    Holley EFI
    Unterminated Fuel Injector Harness Kit
    $124.00
    $124.00
    $124.00
    Introducing the latest addition to the Holley EFI Product Lineup! Our EV6 unterminated injector harness is perfect for anyone wanting to add EV6 injectors to their engine bay. This harness kit come...
  • 558-213.jpg
    Holley EFI
    Injector Harness; Evenly Spaced; JETRONIC/Bosch Style Injectors;
    $143.95
    $160.00
    $143.95
    Ford V8 Injector Harness for Jetronic "Bosch" style Fuel Injectors (Evenly Spaced)
  • 558-214.jpg
    Holley EFI
    Multec Injector Harness; For LS Swap; 2 Injector; Early Truck;
    $237.00
    $237.00
    $237.00
    Multec Injector Harness; For LS Swap; 2 Injector; Early Truck;
  • 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;
  • 558-134_01.jpg
    Holley EFI
    Holley EFI LS Main Harness
    $556.00
    $556.00
    $556.00
    These harnesses are designed to fit most 24x and 58x LS engines, from 1997-2012. They are a perfect fit for installers wanting to mount the any Holley EFI ECU inside of the passenger compartment wh...
  • 558-133_01.jpg
    Holley EFI
    Holley EFI LS Main Harness
    $556.00
    $556.00
    $556.00
    This harness is designed for LS1/6 Engines, from 1997-2004. This harness interfaces with 24x Crank and 1x Cam sensors.
  • 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...
  • 558-128.jpg
    Holley EFI
    Holley EFI Engine Main Harness; For Use w/5.0 Small Block Ford Engines;
    $473.95
    $527.00
    $473.95
    This harness is for fuel injected small block ford engines, such as 5.0L, or 5.8L Windsor powerplants. Plug and play ignition capability with Dual Sync and HyperSpark Distributors, ignition adapter...

Showing 649 -672 of 1505 items