Holley HLY558-308 EFI Main Power Harness

Holley HLY558-308 EFI Main Power Harness is listed by Motorstate as a Engine Wiring Harnesses for catalog matching by brand, part number, and product name. Use this source-backed listing when comparing Holley components in the Engine Wiring Harnesses category. The manufacturer part reference is 558-308, while the Motorstate part number is HLY558-308. Catalog description context: EFI Wiring Harness - Main Power - Holley Dominator EFI - Each. No vehicle compatibility is stated here unless it is present in separate fitment data.