ZF Replacement Shifter - Mefi 6Replacement Livorsi shifter for the original ZF shifters (these had silver handles and a black knob on top). One of the most common problems with the original ZF shifter was the spring button locking system would often break. This new shifter from Livorsi solves that issue. This shifter varies based on your ECM. To verify, look for a label on the back of the original ZF shifter specifying whether it is for a Mefi 6 ECM or an E Control ECM and order