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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...

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...

Holley is pleased to announce the arrival of our remote coil relocation brackets for all existing LS coil models, as well as for Holley EFI SmartCoils. These brackets are fabricated from lightweight aluminum and allow users to discreetly remote m...

Holley is pleased to announce the arrival of our remote coil relocation brackets for all existing LS coil models, as well as for Holley EFI SmartCoils. These brackets are fabricated from lightweight aluminum and allow users to discreetly remote m...

Holley EFI is excited to launch four new multi-point fuel injection intake manifolds for the big block Chevy. These new intakes are available to fit oval or rectangular port heads, and 4150 or 4500 style throttle bodies. These Intakes are ideal ...

Holley EFI is excited to launch four new multi-point fuel injection intake manifolds for the big block Chevy. These new intakes are available to fit oval or rectangular port heads, and 4150 or 4500 style throttle bodies. These Intakes are ideal ...

Holley EFI is excited to launch four new multi-point fuel injection intake manifolds for the big block Chevy. These new intakes are available to fit oval or rectangular port heads, and 4150 or 4500 style throttle bodies. These Intakes are ideal ...

Holley EFI is excited to launch four new multi-point fuel injection intake manifolds for the big block Chevy. These new intakes are available to fit oval or rectangular port heads, and 4150 or 4500 style throttle bodies. These Intakes are ideal ...

Holley EFI Dominator ECU utilizes a lighter potting material than the standard Dominator unit (reduces total weight by 1.8 lbs). This lightweight version is specifically intended for drag racing only. It is not recommended for use in high-heat con...

Specifically designed for use with the Holley 351w Hi-Ram intake manifold, this compact unit shares all of the same great features of our other Holley EFI Dual Sync distributors. The design includes dual Hall Effect sensors for the crankshaft and ...

Specifically designed for use with the Holley 8.2" SBF Hi-Ram intake manifold, this compact unit shares all of the same great features of our other Holley EFI Dual Sync distributors. The design includes dual Hall Effect sensors for the crankshaft ...

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 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 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, ...

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...

These analog-style gauges are designed specifically for use with Holley EFI systems. They are compatible with all Terminator, HP, and Dominator ECU's, allowing them to be installed in a variety of Holley EFI equipped vehicles. CAN-bus communicatio...

Holley is pleased to announce the continuation of their popular analog-style gauges with the release of a new white face 2-1/16" version, designed specifically for use with Holley EFI systems. These gauges are compatible with all Terminator, HP, a...

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 wiring kit is intended to fully populate all of the inputs and outputs for part numbers 553-111 and 553-112 Pro Dashes. These can easily be inserted into the existing 34 pin dash connector. It contains loose wires and 2 and 3 conductor cable ...

M8 Service Harness for 6.86" and 12.3" M8 Pro Dash products.Features: Replacement/service harness Designed for Pro Dash Uses M8 connectors (1) connector Specs: Brand: Holley EFI Category: Air and Fuel Delivery Category: Body Connector Color: B...