$375.00
This is the complete CS air piston assembly for the Graco Fusion FX spray gun. Graco's service manual lists it as a complete piston assembly and the exploded diagram calls it the CS air piston, so it is the option to choose when you want to fit a whole piston rather than rebuild the one already in the gun.
It fits the Fusion FX in the CS configuration and is supplied as a Graco kit. Graco also lists a CS air piston kit that comes without the dosing piston or safety stem, so check the exploded diagram and pick the version that matches the work you are doing.
Genuine Graco OEM part 2000978.