Part Number: 8.703-187.0
OEM / Old Part Number(s): 1-52040009, 104800, 726072, 829892, 87031870
General Pump Item Number: 52040009
Use this ceramic plunger on General Pump & Interpump brand pumps. A cracked or broken ceramic piston can allow water into the pump crankcase, reducing lubrication and possible pump damage. A broken ceramic plunger can also sometimes be seen by a slight water leak between the pump body and pump manifold. Failure to replace a broken ceramic piston can result in further damage to pump, pump seals, unloader valves, and other pressure washer parts.
See Additional Information for a complete list of compatible pumps.