Head Gasket
Devilbiss Oil Free Pump Parts (Portable)

Price: $27.04
Found under the following brands:
Annovi Reverberi-AR, Westward, Bostitch, Black & Decker, Craftsman, Devilbiss Air Power, DeWalt, Emglo, Excell, Porter Cable, Speedaire
Replace this when replacing piston/cylinder. Used with NEW style valve plate.