Exterior Components› Body Panels and Components
Holley
F-BODY T-56 TRANSMISSION HARNESS
SKU: H00E 558-481
Moderate — 2–4 hours
Description
This harness is compatible with Terminator X Max ECUs on V3 Build 100 or later, and Holley EFI systems on V6 Build 300 or later. It is intended for use with GM F-Body T-56 transmissions, and can be used in swap applications with factory Camaro and Firebird transmissions.
Fitment
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Available on iOS & Android
Specifications
| Brand | Holley |
| Part Number | H00E 558-481 |
| Weight | 0.95 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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