3 Port Boost Control Solenoid ValveIncludes: (1) solenoid, (1) ECU pigtail harness with factory crimped ECU pin, (3) 3/16" barb fittings, (1) 1/8" NPT plug, (1) Sintered brass muffler. and (1) spare ECU pin for modified harness lengths.

P/N 554-118 is designed as a drop-in sensor replacement for flying magnet crank trigger setups using a 3/4-16" threaded magnetic sensor. This sensor is a Hall Effect sensor, meaning it outputs a square wave signal, which is ideal for use with most...

Ford AODE/4R70W Transmission Harness

Dominator EFI GM Drive-By-Wire Harness

Introducing the newest development from the Holley EFI engineering team. The Holley EFI High Flow Dual Port Boost Control Kit. This kit contains a set of pre-installed high flow solenoids, which feature a dual O-ring sealing design, preventing any boost...

Dominator EFI Multi Map Selector

GM Tuned Port / Holley Steathram Engine Harness

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 potential...

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, then...

Replacement I/O Adapter for Digital Dash

7' long sealed USB data cable. This cable is included with the purchase of an HP or Dominator ECU.