Air compressor check valve. 3/8" Comp x 1/2" MPT with 1/8" FPT side port.  The check valve is a one-way valve that prevents air from back-feeding from the air tank. If your unit has a hard time restarting when trying to cycle or your pressure switch...

Screw to fasten the handle to the compressor base.

Old Part Numbers: SSW-7367Strain relief for air compressor power cord going into the pressure switch housing.

Screw (fastener) for the motor/pump shroud.

Isolator for pump base. Keep your compressor from damage by replacing these isolators if missing or damaged.

Old Part Numbers: AB-ACG18Saddle mount cup for the motor/pump feet. This installs on the mounting feet of the motor/pump assembly and keeps it from vibrating, as well as reducing noise.

1/4" male NPT x 1/8" female NPT brass bushing reducer for air compressors.

Old Part Numbers: A14877, N044990, SS-1286, 5130029-00, 5131153-001/4"-18 x 1" male NPT close pipe nipple. For model D55167 type 1 & 2 and others. Remember to apply plumber's tape to the threads.