Cylinder/Ring Kit
Devilbiss Oil Free Pump Parts (Portable)

Price: $44.33
Found under the following brands:
Annovi Reverberi-AR, Westward, Bostitch, Black & Decker, Craftsman, Devilbiss Air Power, DeWalt, Emglo, Excell, Porter Cable, Speedaire
Kit includes piston compression ring and cylinder to restore compression. Note: this kit is a piston replacement for piston head with screw in top only.