Extended Coil Harness for Gen III HEMI HellCat - Holley EFI

A common issue with running Terminator X or Holley EFI on a HellCat engine is that the coil harness provided is not long enough, as the coil connectors are pointed upside-down compared to coils on a standard n/a HEMI 5.7L and 6.4L engine.

We've solved this problem with a professional, show-quality coil harness that provides the necessary length to route cleanly and properly.

Direct replacement / compare to Holley p/n 558-311.