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HOLLEY - Online Store Products

A leader in fuel systems for over 100 years, Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro–Stock champion for four decades. Now, Holley offers EFI systems for GM's LS engine, among many other applications. Holley's products also include performance fuel pumps, intake manifolds, and engine dress–up products for street performance, race, and marine applications.

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Hei Ignition Harness

Efi Wiring Harness - Ignition Adapter Harness - GM Small Cap Hei Distributor To Holley Avenger / HP / Dominator Efi...
HOLLEY | Part# HLY-558-304 More Details...

$41.17
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Adp. Harness Sniper Efi to Efi Dual Sync

Ignition Wiring Harness - PLUG-N-PLAY - Sniper Efi To Holley Efi Dual Sync Distributor - Each
HOLLEY | Part# HLY-558-493 More Details...

$33.97

GM LS Coil Sub Harnesses

Ignition Wiring Harness - Factory Replacement - Injector Sub Harness - GM LS-SERIES - Kit
HOLLEY | Part# HLY-558-321 More Details...

$165.95
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Wiring Harness Adapter Hyperspark Igniti

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

$29.46
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Efi PRO-BILLET Ignition Adapter

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

$28.89
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