3.5" OD X 5/8" Bore Poly-V

Complete valve plate assembly with head and cylinder o-ring gaskets. If air leaks out of the intake filter or if the compressor just isn't performing like it should, order this kit. A loss of pressure or slow pressurization is usually caused by either...

Old Part Numbers: SUDL-431-2, 29.90

Includes the nut and o-ring seal for the transfer (discharge) tube from the air compressor tank to the pump head.