TAD734GE Fuel System Fuel Pressure Regulator TAD734GE Parts on group Fuel Pressure Regulator: Pos. Part No Qty Parts name Comments 1. 21638691 [1] Fuel regulator 2. 21670181 [1] Overflow valve 3. 21856211 [1] O-ring 4. 969011 [1] Gasket 5. 21670186 [1] O-ring 6. 21670190 [1] O-ring 7. 21738265 [3] Six point socket scr 8. 21738263 [1] Solenoid valve Parts catalog : Common Rail System. SN10428256- TAD734GE Common Rail System. SN-10428255 TAD734GE Fuel Injector TAD734GE Fuel Pre Filter and Water Separator Components TAD734GE Pre Filter with Water Separator TAD734GE Pre Filter with Water Separator TAD734GE