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558-326 Ignition Coil Extension Harnesses for GM LS Engines
InfoVehicle Info Needed
HOLLEYPART NUMBER: 510-558-326

558-326 Ignition Coil Extension Harnesses for GM LS Engines

$13495
1 left in stock
ShippingShips on Sep 08, 2026
Lowest PriceLowest Price Guarantee

Ignition Coil Extension Harnesses
    Ignition Coil Extension Harnesses
  • GM LS Engines
  • Extends OEM Harness
  • Factory Style Connectors
  • 36 in. Length
  • Techflex F6 Braided Wire Loom
  • Plug-and-Play
  • Set of 2

    Holley 558-326 Ignition Coil Extension Harnesses

    These coil extension harnesses can be used on any engine using GM LS ignition coils, a GM or Holley main harness, or any harness using an OEM-style coil sub-harness.

    Emissions Note:

    This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

    CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

    Simple Plug & Play Wiring Harnesses

    Holley EFI systems have been relied on by enthusiasts across the globe for increased power, fuel economy, and overall engine efficiency. A properly functioning EFI system begins with correct wiring, and these Holley harnesses can assist. Each wiring harness provides fast and easy installation for quick wiring solutions.

Part TypeWiring Harness
Product LineHolley Wiring Harnesses
BrandHOLLEY
Package Height2.3
Package Width3.4
Package Length6.7
Weight0.595 PG
Part CategoryPerformance Parts
Wire Connector StyleMulti-pin
TypeIgnition
Sleeve ColorBlack
Wiring Harness Length3 ft.
QuantitySet of 2
Package Qty1
Package TypeEA
No Questions
No Reviews
Please click here to download the instructions PDF file

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