This 6L80e 6L90e Transmission Extension Harness for J4 P4 26 Pin Holley EFI Terminator X Max ECU is a build-to-length Holley EFI Extension Harness and is perfect to extend any of the included Holley ECU engine harnesses to reach the distance you need.
Each build-to-length harness is custom-made to your selected length. We are unable to accept returns on custom-length harnesses.