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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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Ford Tfi Ignition Harness

Efi Wiring Harness - Ignition Adapter Harness - Ford Tfi Distributor To Holley Avenger / HP / Dominator Efi - Each
HOLLEY | Part# HLY-558-305 More Details...

$96.66
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LS Coil On Plug Harness Universal

Ignition Wiring Harness - COIL-ON-PLUG To Sub Harness - Holley HP / Dominator Efi - Each
HOLLEY | Part# HLY-558-307 More Details...

$138.95
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HP Efi SUB-HARNESSES - Smart Coil

Efi Wiring Harness - Smart Coil - Ignition Coil Wiring - Holley HP / Dominator Efi - Universal - Each
HOLLEY | Part# HLY-558-312 More Details...

$186.95
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Universal Mpfi Coil On Plug Main Harness

Ignition Wiring Harness - COIL-ON-PLUG Main Harness - Universal - Each
HOLLEY | Part# HLY-558-117 More Details...

$475.95
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Ford Mpfi Coil On Plug Main Harness

Ignition Wiring Harness - COIL-ON-PLUG Main Harness - Ford Mpfi - Each
HOLLEY | Part# HLY-558-118 More Details...

$502.95
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COIL-NEAR-PLUG Sub Harness - Big Wire

Ignition Wiring Harness - Big Wire C-N-P Sub Harness - V8 - Each
HOLLEY | Part# HLY-558-318 More Details...

$208.95
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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

Coil Harness - Ford 4v Modular Engines

Coil Harness - Ford 4v Modular Engines
HOLLEY | Part# HLY-558-315 More Details...

$99,999.99

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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