Sale

Air and Fuel› Fuel Injection Systems and Components - Electronic

Holley

Terminator X Max 6L80E Transmission Kit

$587.95 $573.95 Save $14.00

SKU: HOL-558-499

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Holley Terminator X Max 6L80E Transmission Kit is a transmission control module designed to add GM 6L80/90E transmission control to any vehicle utilizing a Terminator X Max ECU. This kit communicates via CAN with the internal TCM (Transmission Control Module) for 2007+ GM 6L80E and 6L90E transmissions. It includes a Holley EFI OBDII Transmission Tuning Handheld for adjusting shift points, tire size, and gear ratio.

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

BrandHolley
Part NumberHOL-558-499
CategoryAir and Fuel

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.

View Full Return Policy