#912000 Replaces BOSCH PUMP # 0510725059, 5/8" Diameter x 1.5" LONG SHAFT PUMP. Check the shaft size of your pump to determine if this is the correct pump. Mounting holes 4.25" on Center. Standard pump on PTR Philadelphia Tramrail models 1800, 2300, 3400, 3600. Xtra long shaft to insert into motor shaft. **do not replace with or use a standard 1"long shaft pump - they will roll key inside motor shaft and damage it**