Holley EFI HP Smart Coil Ignition Harness

Holley EFI ignition sub-harness for running Holley HP Smart Coils on an 8-cylinder engine. It's a pair of coil harnesses laid out like the factory GM LSx coil harnesses, built to work with Holley HP and Dominator ECUs.

• Pair of coil harnesses for 8-cylinder engines
• Factory GM LSx-style layout
• Connects Holley HP Smart Coils
• Works with Holley HP and Dominator ECUs
• Plugs straight into Holley LSx plug-and-play main harnesses as a direct replacement for the factory coils
• With a non-LSx Holley main harness, adapter PN 558-307 is required

Holley part number 558-312. UPC 090127688120.

Emissions code 3: for use on uncontrolled (non-emissions) vehicles only.