Sale and Clearance

Take control of your LS engine with Terminator X. Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley...

Take control of your 302ci Small Block Ford engine in your Fox Body Mustang with Holley EFI Terminator X system. Don't settle for the factory ECU with a cumbersome tuning interface or pre-programmed tuning chip when you can have complete control o...

Introducing Terminator X and X Max Kits for the Modular Ford engine. These new kits will plug and play with either 2V or 4V Mod Motors commonly found in 1996-2004 Mustangs, 1995-2006 F150, or 2002-2005 Explorers. These kits will work with both 4.6...

Introducing Terminator X and X Max Kits for the Modular Ford engine. These new kits will plug and play with either 2V or 4V Mod Motors commonly found in 1996-2004 Mustangs, 1995-2006 F150, or 2002-2005 Explorers. These kits will work with both 4.6...

Holley EFI large logo on the front and back of a black comfy tee.Features: Holley EFI horizontal on front Holley EFI horizontal on back Cotton Black color Specs: Brand: Holley EFI Category: Apparel and Collectibles Color: Black Emission Code: ...

The Holley EFI Stealth 4150 Fuel Log is designed to be used with either Sniper EFI Stealth 4150 or Terminator X Stealth 4150 systems. This pre-assembled fuel cross over is designed to provide ample clearance between the fuel hose, and the TPS sens...

The Holley EFI analog-style gauge is designed specifically for use with EFI systems. The 0-100 psi gauge is Glycerine (oil) filled for added durability in applications where vibration or pulsation is present. The stainless steel case and bezel cre...

Holley EFI Fuel Injectors feature a precision lapped disc valve, high-quality brass windings, and high-temp O-rings. These injectors provide excellent linearity with no discernible "bounce" at low pulse widths as commonly found in other injectors....

Replacement Bosch wideband oxygen sensor for Sniper EFI and Terminator X systems.Features: Anti-Seize pre-applied to sensor threads. Service Oxygen Sensor for Sniper EFI and Terminator X systems. Specs: Band Type: Wide Brand: Holley EFI Categor...

This harness is designed for use with Terminator X ECU's Only with V3 build 100 or later.Specs: Brand: Holley EFI Category: Engine Crank Reluctor: 58x Emission Code: 4 Harness Application: Gen V LT4 Harness Application: LT Harness Type: Mai...

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 included so you can cut the wire to the desired length, ...

Holley EFI LS main harnesses have a MAP sensor connecter designed for use with an LS1/2 style MAP sensor. The 558-416 is an adapter harness that can be used to adapt any LS harness that uses an LS1/2 MAP sensor connection to an LS3 MAP. Also gre...

Check out Holley EFI's laptop tuning mat. Designed to protect your vehicle's paint while giving you a soft and secure area for your laptop when tuning in the shop, at the dyno, or in the pits. Features our Holley EFI logo and made from 1/8" thick ...

Introducing the newest development from the Holley EFI engineering team, our EFI high flow dual port boost control kit featuring two solenoids. This kit contains a set of pre-installed high flow solenoids, which feature a dual O-ring sealing desig...

This kit contains (1) high flow solenoid for service replacement in the field, recommended for 557-201.   Features: Pre-Terminated connectors simply plug into the solenoids and pin into Holley EFI ECU connectors. Proprietary design to flows nearl...

Holley is pleased to announce the continuing evolution of its very successful analog-style gauges with the release of new 3-3/8" and 4-1/2" speedometers and tachometers to complement our 2-1/16" gauge line. These are designed specifically for use ...

Dominator EFI GM Drive-By-Wire HarnessFeatures: Plug and Play with Holley Throttle Pedal Part Number - 145-160 Designed to work with GM Throttle body P/N's - 12570790 and 12580760 Designed to work with GM Throttle Pedal P/N - 10379038 and 19417903...

Holley EFI fuel filters with built-in regulator provide a simple and clean means to fueling your LS swap. Available with OEM-style or -6AN connections, they feature an internal regulator set at 58 psi, along with an integrated 5 nominal micron rat...

These Holley EFI Smart Coils are a bolt-in ignition upgrade for your late model HEMI or Coyote engine. Here's the difference over a stock coil, they produce more spark energy while consuming less power without sacrificing voltage output. This mean...

Holley EFI fuel kits are the perfect addition to your Terminator or Holley EFI kit. They're engineered using Holley fuel pumps, regulators, and filters, coupled with quality Earl's plumbing to provide a fuel system tailored to the needs of your Te...

Holley EFI universal bypass fuel pressure regulators are for use with fuel systems in street or track applications. They feature adjustable base pressure from 15-90 psi, a gauge port, and a boost reference port as well. The regulators are ideal fo...

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 junkyard engine with locked cams? Unlock the full pot...

When converting your fuel system to a return style EFI setup, the biggest challenge can be plumbing the fuel lines. Holley continues to be the leader in fuel system development to make your life easier! The new Holley EFI Filter Regulator assembly...

When converting your fuel system to a return style EFI setup, the biggest challenge can be plumbing the fuel lines. Holley continues to be the leader in fuel system development to make your life easier! The new Holley EFI Filter Regulator assembly...