Universal MPFI with COP Main Harness
3.7 · 3 reviews
SKU: 558-117

Universal MPFI with COP Main Harness

$614.99
FREE delivery
Description

ABOUT THIS PRODUCT

This 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.

Product 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
Specifications
Brand
Holley EFI (770)
SKU
558-117
Product type
Automotive
Guides & Resources
User Guide
Returns Policy
Shipping Information

Free shipping on all orders. Most items ship next business day after your order is placed.

Returns Policy

Returns are accepted when the product is in its original, unopened container. Contact us if you have questions about your order.

View full returns policy

Customer Reviews

3.7

Based on 3 reviews

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R
Riley N. Verified Buyer
06/08/2025

No complaints

Quick delivery and the product exceeded my expectations.

M
Maria K. Verified Buyer
08/17/2025

Would buy again

Does what it is supposed to do. Happy with this purchase.

T
Ted R. Verified Buyer
02/03/2025

Works perfectly

Setup was simple and it has worked reliably since day one.

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