Hypertech 730127 In-Line Speedometer Calibrator Module 17-19 6.6L GM Duramax L5P

Get accurate speedometer readouts and proper shifts with the Hypertech Speedometer Calibrator.

Hypertech's In-Line Speedometer Calibrator Module is a plug-and-play module that corrects the speedometer and odometer for non-stock and/or gear ratios. This module is perfect for vehicles with computers that don't allow for tire and gear ratio correction, or to re-calibrate for tire and gear sizes outside the range of programmers.