Diesel Injection Pump High Pressure Injection Line Washers 12 Pack for CAV but will also fit Stanadyne Roosa Cross Section - CS 1.8 MM External Measure - EM 12.8 MM Inside Diameter - ID 9.5 MM Material IRON Stanadyne Roosa Master and CAV FIT all pumps with model numbers that start with: JDB DBG DBM DBO DCB DCM CBC CDC DPA DO NOT fit pumps with model numbers that start with DB2 DB4 DM DES DS ⚙Replaces OE # 11346 5936-332C