Exterior Components› Body Panels and Components
Holley
TERMINATOR X WIDEBAND ADAPTER HARNESS
SKU: H00E 558-463
Moderate — 2–4 hours
Description
Part #: 558-463
Service harness sensor adapter for Terminator X and X Max ECU only.
Compatible w/ Terminator X and X Max ECUs
MIA's Description
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
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 558-463 |
| Weight | 0.2 lb |
Videos
Holley EFI GEN lll HEMI INSTALL & FIRST START | Terminator X Max
How To: Install Terminator X EFI on any LS Engine
"Discontinued" AFM-Holley Terminator X Gen 2 Fox Body EFI Kit
How To Setup Inputs & Outputs on Terminator X EFI
Holley’s New Standalone Pro Dash Is Perfect for EFI and Carbureted Vehicles
How To Properly Place and Install an O2 Sensor
First Holley Terminator On A Northstar? First Impressions Of The Stand Alone ECM.
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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