Graco Paint Sprayer Pump Piston Rod - 235709
The piston rod connects the internal parts to the motor and gear box. On the rods upstroke, it draws paint into the chamber, and on the down stroke it pushes the paint into the hose.
For use with these airless paint sprayers:
Part #: 243091
Part #: 235708
Part #: 218197
Part #: 224966