GM LS Coil Sub Harnesses
HOLLEY  |  Part# HLY-558-321   More Details...

$207.95

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Wiring Harness Adapter Hyperspark Ignition
HOLLEY  |  Part# HLY-558-323   More Details...

$52.45

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Efi PRO-BILLET Ignition Adapter
HOLLEY  |  Part# HLY-558-325   More Details...

$44.21

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LS Coil Ext. Harness 36IN 2pk
HOLLEY  |  Part# HLY-558-326   More Details...

$134.95

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Efi Wiring Harness - J1A/B - Holley Dominator Efi - Each
HOLLEY  |  Part# HLY-558-400   More Details...

$135.95

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Efi Wiring Harness - J2a Auxiliary Connector Harness - Holley Dominator Efi - Universal - Kit
HOLLEY  |  Part# HLY-558-401   More Details...

$242.95

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Efi Wiring Harness - J2b Auxiliary Connector Harness - Holley Dominator Efi - Universal - Kit
HOLLEY  |  Part# HLY-558-402   More Details...

$186.95

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J3 Connector & Harness
HOLLEY  |  Part# HLY-558-403   More Details...

$186.95

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J4 Connector & Harness
HOLLEY  |  Part# HLY-558-404   More Details...

$238.95

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Efi Wiring Harness - Transmission - Holley Dominator Efi - GM 4L60E/4 L80e - Each
HOLLEY  |  Part# HLY-558-405   More Details...

$318.95

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