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Ignitions and Electrical› Ignition Components

Holley

HP EFI Sub-Harnesses - Smart Coil

$322.95 $290.95 Save $32.00

SKU: H00E 558-312

In Stock
In Stock
Ships by Nov 14
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$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Holley 558-312 is an HP Smart Coil ignition sub-harness designed for 8-cylinder engines. These harnesses are similar in design to factory GM LSx coil harnesses but plug into Holley HP Smart Coils. They are for use with Holley® HP and Dominator ECUs and other EFI systems.
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Part #: 558-312

HP Smart Coil ignition sub-harness. Includes a pair of coil harnesses for an 8 cylinder engine. These harnesses are similar in design to factory GM LSx coil harnesses, but plug into Holley HP Smart Coils. They plug into Holley LSx plug and play main harnesses if one wants to replace factory LSx coils with Holley HP Smart Coils. If using a non-LSx main harness, purchase PN 558-307 for connectors, wiring, terminals to connect directly to a Holley HP or Dominator ECU

Features:

  • Includes a pair of coil harnesses for an 8 cylinder engine
  • Similar to factory GM LSx coil harnesses
  • For use with Holley HP or Dominator ECUs

For use with Holley (R) HP and Dominator ECUs and other EFI systems

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandHolley
Part NumberH00E 558-312
Weight0.95 lb

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