Holley EFI

Introducing the latest sensors to the Holley EFI line up – Current Transducers. These high-quality transducers can be easily installed to monitor the amp draw from any mission-critical component, such as fuel pumps, alternators, electric water pumps,...

Service Secondary Throttle Body with Injectors. Intended to be used as a service component or when building a custom 4150 style 2x4 setup.FeaturesMade from a 5/32” thick UV-resistant ABS composite materialBezels are as strong, or stronger than the OEM...

12' Male to Female CAN Adapter Harness (for Racepak and other external CAN devices)Features5x 20awg wires2x shielded 18awg wiresAvailable in 25’ or 100’ spoolsSpecifically designed for wide band oxygen sensor cable, but can be used for other purposes.

Introducing the Holley EFI Wiring Shop. We have one goal, to provide you a one stop solution for all of your wiring components needs. From connectors and pins to wire loom and tools! We have everything you need to build or service your Holley EFI powered...

Introducing the Holley EFI Wiring Shop. We have one goal, to provide you a one stop solution for all of your wiring components needs. From connectors and pins to wire loom and tools! We have everything you need to build or service your Holley EFI powered...

Introducing 2x4 Terminator Stealth EFI upgrade components. The wait is over. These upgrade components allow you to use your current Terminator Stealth EFI throttle body, install a new main harness, and slave throttle body, and you are finished. This...

The Holley GM LS7 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited. Coupling this Hi-Ram intake with the high flowing LS7...

Get all the great features of Terminator self-tuning EFI in a bolt-on system for GM's popular LS engines! The 550-613 kit controls fuel, spark, drive-by-wire and 4L60/4L80E transmissions through the Terminator's new 3.5" touchscreen! Install, answer a...

These Stealth style throttle bodies DO NOT include injectors; they are designed to be used on MPFI intake manifolds.FeaturesMade from a 5/32” thick UV-resistant ABS composite materialBezels are as strong, or stronger than the OEM panelsBezels come in a...

This cast EFI intake elbow allows the use of GM LS throttle bodies on any intake manifold w/ the 4150 mounting flange. Slotted mounting holes & dual throttle cable mounting bracket bosses allow the elbow & throttle body to be mounted forward, sideways,...

Holley's BILLET LS Throttle Bodies are the BIGGEST BORE - MOST FEATURE LOADED available. Holley went back to the drawing board and built the ultimate air valve for your LS engine! This all new design boasts a huge 105 millimeter bore for when WOT is all...

Rigidly mounting pressure transducers to your engine is never a good idea. Introducing the Holley EFI sensor block! Compatible with all transducers that utilize 1/8 NPT male threads and 7/8" or smaller body/hex diameter. This sensor block provides a...