ORIGINAL EMAK O-RING CH12100220 PW 120 C Pressure Washer Motor PW 121 C Pressure Washer Motor PW 135 C Pressure Washer Motor PW 136 C Pressure Washer Motor PW 140 Pressure Washer Motor PW 145 C Pressure Washer Motor Pump PW 150 C Pressure Washer Motor PW 155 Pressure Washer Motor Pump PW 160 Pressure Washer Motor PW 170 C Pressure Washer Motor PW 250 HC Pressure Washer Motor Pump PW 300 HC Pressure Washer Motor Pump