156879-0000 ZEXEL 9 423 611 600 BOSCH BLEEDER SCREW 9423611600 1568790000 1157491860

Illustration 1 g06221137
(1) Back flow connector
Illustration 2 g06221138
(2) 423-3253 Connector (Old back flow connector with check valve)
(3) 516-2663 Connector As (PCA connector without check valve)The new and the former connector assembly part numbers are listed in the Table 1.
Table 1
Qty New Part Number Description Former Part Number
1 516-2663 Connector As 423-3253
Illustration 3 g06224488
Bosch Diesel Exhaust Fluid Pump with the part number stamping
The Bosch part number is stamped on the pump, refer to Illustration 3. The Cat® part number equivalent to the Bosch part number for the pump is given in Table 2.
Table 2
Qty Cat® Part Number Description Bosch Part Number
1 485-9753 Diesel Exhaust Fluid Pump Gp (24V) 0 444042168
1 398-4746 Diesel Exhaust Fluid Pump Gp (14 V) 0 444042166 Note: The change is effective on the PETU and DEF pump serial numbers listed in Table 3.
Table 3
PETU Serial No: PET034589M
PUMP Serial No: 0171013500