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  • 561-110_01.jpg
    Holley EFI
    Spark Plug Wire Set
    $140.95
    $157.00
    $140.95
    Holley EFI Universal "Cut-to-Fit" spark plug wire sets for GM Ls Engines come with the spark plug terminal and boot installed with the Coil end unterminated. Coil cap boots and terminals are includ...
  • 561-111_01.jpg
    Holley EFI
    Spark Plug Wire Set
    $157.00
    $157.00
    $157.00
    Holley EFI Universal "Cut-to-Fit" spark plug wire sets for GM Ls Engines come with the spark plug terminal and boot installed with the Coil end unterminated. Coil cap boots and terminals are includ...
  • 561-105.jpg
    Holley EFI
    Spark Plug Wire Set
    $128.00
    $128.00
    $128.00
    Holley EFI LS wires are designed to work with Hooker shorty headers to prevent burns resulting in misfires.
  • 561-104.jpg
    Holley EFI
    Spark Plug Wire Set; Fits w/Shorty Headers; 90 Degree; Gray/Black; Silicone;
    $128.00
    $128.00
    $128.00
    Holley EFI LS wires are designed to work with Hooker shorty headers to prevent burns resulting in misfires.
  • 561-102.jpg
    Holley EFI
    Spark Plug Wire Set; Fits w/Shorty Headers; 45 Degree; Red;
    $109.95
    $123.00
    $109.95
    Holley EFI LS wires are designed to work with Hooker shorty headers to prevent burns resulting in misfires.
  • 561-103.jpg
    Holley EFI
    Spark Plug Wire Set; Fits w/Shorty Headers; 90 Degree; Black; Silicone;
    $128.00
    $128.00
    $128.00
    Holley EFI LS wires are designed to work with Hooker shorty headers to prevent burns resulting in misfires.
  • 561-101.jpg
    Holley EFI
    Spark Plug Wire Set; Fits w/Shorty Headers; 45 Degree; Gray;
    $123.00
    $123.00
    $123.00
    Holley EFI LS wires are designed to work with Hooker shorty headers to prevent burns resulting in misfires.
  • 561-100.jpg
    Holley EFI
    Spark Plug Wire Set; Fits w/Shorty Headers; 45 Degree; Black;
    $109.95
    $123.00
    $109.95
    Holley EFI LS wires are designed to work with Hooker shorty headers to prevent burns resulting in misfires.
  • 558-508.jpg
    Holley EFI
    Fuel Injection Harness
    $699.00
    $699.00
    $699.00
    Injector Harness; Fits w/Dominator Or HP ECU; Bosch Injector; Incl. Main Power Harness/Universal Main Harness For Ford V8/Ignition Adapter And Tach Input;
  • 558-11018236.jpg
    Holley EFI
    Engine Wiring Harness
    $1,194.00
    $1,194.00
    $1,194.00
    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 weekend road race warrior powered by a coyote jun...
  • 558-506.jpg
    Holley EFI
    Fuel Injection Harness
    $1,249.00
    $1,249.00
    $1,249.00
    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 harness, and ignition modules. Most stock sensors...
  • 558-505.jpg
    Holley EFI
    Fuel Injection Harness
    $1,249.00
    $1,249.00
    $1,249.00
    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 harness, and ignition modules. Most stock sensors...
  • 558-504.jpg
    Holley EFI
    Universal Multi-Point Main Harness
    $713.00
    $713.00
    $713.00
    An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Our Holley EFI Harness Kit comes co...
  • 558-502.jpg
    Holley EFI
    Fuel Injection Wire Harness
    $808.00
    $808.00
    $808.00
    An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Our Holley EFI Harness Kit comes co...
  • 558-503.jpg
    Holley EFI
    Fuel Injection Wire Harness
    $713.00
    $713.00
    $713.00
    An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Our Holley EFI Harness Kit comes co...
  • 558-501.jpg
    Holley EFI
    Fuel Injection Wire Harness
    $699.95
    $778.00
    $699.95
    An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Our Holley EFI Harness Kit comes co...
  • 558-500.jpg
    Holley EFI
    Fuel Injection Wire Harness
    $808.00
    $808.00
    $808.00
    An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Our Holley EFI Harness Kit for your...
  • 558-476_01.jpg
    Holley EFI
    Holley EFI PWM Alternator Harness
    $66.61
    $66.61
    $66.61
    Plug and play Holley EFI alternator harnesses for late model engines with Pulse Width Modulated alternators. This includes most 2007+ GM engines and most 2005+ Ford engines.
  • 558-475_01.jpg
    Holley EFI
    Holley EFI PWM Alternator Harness
    $66.61
    $66.61
    $66.61
    Plug and play Holley EFI alternator harnesses for late model engines with Pulse Width Modulated alternators. This includes most 2007+ GM engines and most 2005+ Ford engines.
  • 558-473_01.jpg
    Holley EFI
    Terminator X Transmission Control Harness
    $239.00
    $239.00
    $239.00
    If your HEMI swap project is using a Chrysler 46RE Transmission, commonly found in 1996-2003 Dodge Ram - Dakota, or Durango V8 trucks, you can finally control your transmission through the Termina...
  • 558-470_01.jpg
    Holley EFI
    Automatic Transmission Wire Harness; Plug And Play Fully Terminated Harness;
    $202.95
    $226.00
    $202.95
    Ford 4R70W/4R75W Transmission Harness - Complete terminated harness with j4 connector to operate 1998+ Ford electronic transmissions, for Dominator EFI and Terminator X Max only!
  • 558-471_011981.jpg
    Holley EFI
    Automatic Transmission Wiring Harness
    $206.00
    $206.00
    $206.00
    Automatic Transmission Wiring Harness
  • 558-467_01.jpg
    Holley EFI
    Manifold Absolute Pressure Sensor Adapter
    $29.46
    $32.73
    $29.46
    These two new MAP sensor adapters from Holley EFI allow you to quickly add a stainless steel MAP sensor to your existing installation. Holley part #558-466 adapts harnesses with a (MPFI) Weatherpac...
  • 558-466_01.jpg
    Holley EFI
    Manifold Absolute Pressure Sensor Adapter
    $29.46
    $32.73
    $29.46
    These two new MAP sensor adapters from Holley EFI allow you to quickly add a stainless steel MAP sensor to your existing installation. Holley part #558-466 adapts harnesses with a (MPFI) Weatherpac...

Showing 553 -576 of 1505 items