Overview Reviews Product Description 558-113 Holley EFI Ford Modular 2V & 4V Main Harness for use with Holley Smart Coils Main Harness for 99-04 2 & 4 Valve Ford Modular (4.6 & 5.4L) Engines for use with Holley Smart Coils Product Videos Custom Field Product Reviews Write a Review Write a Review × 558-113 Holley EFI Ford Modular 2V & 4V Main Harness for use with Holley Smart Coils Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *