Product Description Holley - 550-604Engine Control Module - HP EFI - Wiring Harness - V8 Multi Port Fuel Injection - Kit
Holley EFI Holley EFI 550-604 - HP EFI ECU And Harness Kit MSRP: $2,778.00 Was: Now: $2,499.95 Add to Cart
Holley Holley 550-606 - Ford MPFI HP ECU and Wire Harness Kit MSRP: $3,227.00 Was: Now: $2,903.95 Add to Cart
Holley Holley 550-606N - HP ECU & Harness - Ford MPFI NTK MSRP: $3,075.00 Was: Now: $2,766.95 Add to Cart