Dewalt N148120SV Air Compressor Pressure Regulator Bonnet Genuine Original Equipment Manufacturer (OEM) Part This part is compatible with models including; D55168 TYPE 4,D55167 TYPE 3,D55168 TYPE 2,D55167 TYPE 1,D55168 TYPE 1,D55146 TYPE 5,D55146 TYPE 1,D55146 TYPE 2,D55146 TYPE 3,D55146 TYPE 4,D55167 TYPE 4,D55168 TYPE 6,D55168 TYPE 5 Pressure regulator bonnet N148120SV houses the diaphragm and internal components of the regulator Genuine Original Equipment Manufacturer (OEM) part. Compatible Brands: Dewalt This pressure regulator bonnet (part number N148120SV) is for air compressors Unplug the air compressor and bleed the air pressure from the tank before installing this part