Fits Chevy/GMC 2500HD (17-19) Speedometer Calibrator Inline Diesel 90005_A ext-cab 6L V8 1969 Chevrolet Kingswood

6L V8 1969 Chevrolet Kingswood Estate 427/7

8L V6 1985 Oldsmobile Firenza 173/2

1990 - 1993 Chevrolet Lumina

Mercury Capri (1979-1983)

3 V8 1969 - 1970 Chevrolet El Camino Base 396/6

Fits Chevy/GMC 2500HD (17-19) Speedometer Calibrator Inline Diesel 90005_A ext-cab 6L V8 1969 Chevrolet KingswoodSpeedo Calibrator Inline Diesel Chevy GMC 2500HD 3500HD (17 19) Put the finishing touch on your lifted vehicle with Rough Country's Speedometer Calibration Device! This easy to use Speedometer Calibrator helps you quickly and easily reprogram your vehicle's speedometer to match the output of your larger tires. Your vehicle's computer is designed to track the speed based on your stock tire height. When upgrading to larger tires, there will be a