Holley EFI

Holley EFI 558-102 LS1 Main Harness LS1/LS6 for HP and Dominator EFI

This harness is designed for LS1/6 Engines, from 1997-2004. This harness interfaces with 24x Crank and 1x Cam sensors.

MSRP: $653.95

$568.95

$632.95

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Holley Performance Parts – EFI, Intakes, & More

Holley 558-190 SNIPER 2 MAIN HARNESS FOR PDM

This harness includes the Switched 12v Power Wire, Main Battery Power and Ground, Fuel Pump Relay, Coil - Input wire, and HyperSpark Distributor connector. This harness is braided split wire loom to...

MSRP: $150.95

$131.35

$145.95

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Holley Performance Parts – EFI, Intakes, & More

Holley 558-321 LS Coil Harness

Are you tired of scouring the junkyard for stock ls coil sub harnesses? Introducing the new Holley EFI LS Coil Sub Harness. This coil sub harness is intended to be used with factory LS coils and...

MSRP: $202.95

$179.95

$199.95

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Holley Performance Parts – EFI, Intakes, & More

Holley 558-128 Ford 87-93 Engine Harness - extra length

This harness has extra length over the standard Ford harness and is long enough to be installed under the passenger seat on cars such as Fox Mustangs.This harness is for fuel injected small block...

MSRP: $562.95

$493.95

$549.95

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Holley Performance Parts – EFI, Intakes, & More

Holley 558-493 SNIPER EFI TO HOLLEY DUAL SYNC HARNESS

This ignition adapter ensures your Sniper EFI ignition installation is a snap! Simply plug up both connectors, terminate the Pink Wire to a Switched 12v Ignition Source, and you're finished...

MSRP: $48.36

$42.17

$46.86

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Holley Performance Parts – EFI, Intakes, & More

Holley 558-102 LS1/6 (24x/1x) Engine Main Harness

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Holley Performance Parts – EFI, Intakes, & More

Holley 558-102 LS1/6 (24x/1x) Engine Main Harness

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Holley Performance Parts – EFI, Intakes, & More

Holley 558-102 LS1/6 (24x/1x) Engine Main Harness

Related Products

Holley EFI 558-102 LS1 Main Harness LS1/LS6 for HP and Dominator EFI

Holley 558-190 SNIPER 2 MAIN HARNESS FOR PDM

Holley 558-321 LS Coil Harness

Holley 558-128 Ford 87-93 Engine Harness - extra length

Holley 558-493 SNIPER EFI TO HOLLEY DUAL SYNC HARNESS

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