Bosch Tronic 6000C WH17 - Model #45-551721
Bosch Tronic 6000C WH27 - Model #45-557721
There have been several upgrades to the units and one of theses changes is to the Logic Printed Circuit Board (PCB). The new Logic PCB for the Bosch Tronic 6000C WH17 & WH27 has a different part number from the older units. Below is the new part numbers and also the serial number cutoff for the PCB boards.
Serial Number Cutoff:
Logic PCB #8-738-710-921, this would be for any new 6000C WH17 with serial number 555 A 800001 or higher
Logic PCB #8-738-710-922, this would be for any new 6000C WH27 with serial number 555 A 800271 or higher