Universal MPFI Coil On Plug Main Harness 558-117
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You have 30 days to request a return. All sale items are final sale.
Features:
- Built in C-O-P 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
About Holley EFI

Find standalone EFI for LS, Coyote, Hemi and more at Holley.com. From engine swapping to managing up to 4000 horsepower, we have a solution for every project!
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