14" CHROME ROUND AIR CLEANER KIT

Dress up your engine with Holley's 14" Chrome Plated Round Air Cleaner Assembly. Features: Triple Chrome Plated Housings Traditional Look Open Element Style Low Restriction Paper Filter

GM 58X EFI HARNESS KIT

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...

SEALED USB DATA CABLE

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

DOMINATOR EFI AUXILIARY HARNESS

Used when adding a second wide band oxygen sensor to a Dominator EFI installation. Features: J2A Connector #2 Wide band oxygen sensor harness (Fully Terminated) 23 user programmable input wires with...

1/4" EGT PROBE, OPEN TIP

Exhaust Gas Temperature is a critical indicator of the performance of a typical racing engine.

HOLLEY EFI 2 AXIS G-METER

Introducing the Holley EFI 2 Axis G-Meter. Designed to be stable in the harshest environment. Co-Designed with RACEPAK, this G-meter would be a perfect fit for your four digit horsepower drag radial...

HOLLEY EFI 8 CHANNEL CAN EGT KIT

Introducing the Holley EFI 8 Channel CANBus EGT Kit. Exhaust Gas Temperature data is critical information when your engine tune up is on the ragged edge. Knowing the exhaust temperature of each...

J1B CONNECTOR

Introducing J1A through J4 Connectors Kits so you no longer have to buy a complete connector kit if you only need one I/O connector Features: OEM Quality Connectors and Pins Perfect for DIY or...

J1A CONNECTOR

Introducing J1A through J4 Connectors Kits so you no longer have to buy a complete connector kit if you only need one I/O connector Features: OEM Quality Connectors and Pins Perfect for DIY or...

GM LS 58X EFI HARNESS KIT

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...

CRANK/CAM IGN. HARNESS. FULLY TERMINATED HARNESS.

This fully terminated harness is compatible with HP and Dominator ECU's and is plug and play w/ the following products: 554-118-HALL EFFECT CRANK TRIGGER SENSOR 554-124-FERROUS TARGET CRANK SENSOR...

HP SMART COIL HARNESS

HP Smart Coil ignition sub-harness. Includes a pair of coil harnesses for an 8 cylinder engine. These harnesses are similar in design to factory GM LSx coil harnesses, but plug into Holley HP Smart...