This part is designed to work with all OEM shifters, new or worn out. Aftermarket shifters may or may not work due to tolerance differences. Please measure the outside diameter of the shifter (where lockout slides) before installing PERRIN reverse lockout. It must measure smaller than .514" on all surfaces, or the PERRIN reverse lockout may not slide smoothly. It also may not be smaller than .500" or it could rattle on the shifter.