Holley EFI Universal MPFI Coil on Plug Harness 558-117

$502.95 Each - Free Shipping



Holley’s 558-117 Universal MPFI Coil On Plug harness provides a plug and play upgrade solution for those seeking to convert to Coil-On-Plug. Additionally we have pre-installed a Power Tap for easy access to 12v, 5v Reference, and Sensor Grounds.

  • Built in COP Harness
  • Additional 40 amp relay to power individual coils
  • 20awq gauge wire or larger!
  • Plug and play with 558-312 or 558-318 Smart Coil Sub Harnesses.
  • Dual CANbus Connectors for multiple CAN devices
SKU: HLY-558-117 Category:


There are no reviews yet.

Be the first to review “Holley EFI Universal MPFI Coil on Plug Harness 558-117”