Exterior Components› Body Panels and Components
Holley
EFI Injector Harness - Universal Unterminated
SKU: H00E 558-204
Moderate — 2–4 hours
Description
Part #: 558-204
Universal Unterminated Injector Harness for HP EFI & Dominator EFI(Bosch EV1 style).
Universal Unterminated Injector Harness for HP EFI & Dominator EFI(Bosch EV1 style).
MIA's Description
Fitment
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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Holley |
| Part Number | H00E 558-204 |
| Weight | 0.75 lb |
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Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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