Unloader Valve - YES  90 degree  On/Off Switch - YES  Heavy Duty 30 Amp OEM Model

If you start to hear knocking from your pump, then you need to replace your bearing inserts. Check crank to make sure it is not damaged.

Complete hollow-style air filter assembly for air compressors, including filter element. 1/2" threaded inlet. Takes the #14-SOL Filter Element. Replacing the pump's air filter regularly is important to maintain the performance and longetivity of your air...

Replace these if bent or worn. Check crank for damage first. (includes upper bushing)

Crankcase Ball Bearing, front end-cap.