Replace this seal when replacing the piston / cylinder kit, and if air is leaking from the head at the outlet.

Old Part Numbers: Z-A08548, Z-D29777Valve Plate Assembly, includes Valves and Cylinder Gasket (Head Gasket sold separately). Genuine Porter Cable replacement part. Broken valve causing slow pump up or no compression at all? Replace this valve plate kit...

Old Part Numbers: A19714, D27022Check Valve, 1/2" male NPT x 1/4" hose barb. If your compressor constantly leaks after it shuts off, this is probabably the problem. If this one-way check valve is clogged or defective, air will backfeed from your tank, so...

Screw for the piston rod cover.

Old Part Numbers: Z-A04615, A16342, Z-D23584, N036515SV, N039790Pump and motor assembly for air compressors (does not include plastic cover or pump head). NOTE! The four bolt holes in the base of the pump, where the valve plate and head bolt onto,...

Old Part Numbers: CAC-1213Isolator for the pump. Keeps the pump from vibrating against the plastic shroud.

Replace if misreading or broken.