It's a bushing at the shifter linkage on the transmission. Shaped like a cube.mickeyfinn":29bwakuv said:What is a "Sugar Cube"
It helps with the notchy feeling on older cars. It isn't a miracle cure it's similar to replacing the rubber bushings at the ends of the shift cables.mickeyfinn":2rnyafj3 said:Does replacing it help shifting? ST165 (E50F transmission)