Part Number: 8.703-185.0
OEM / Old Part Number(s): 1-51040109, 104798, 87031850
General Pump Item Number: 51040109
Use this ceramic plunger on General Pump and 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.
For use on General Pump Models: TT941, TT9111
For use on Interpump Models: WW94