The Comet 6305.0914.00 Pressure Washer Pump Package includes a ZWD4040G pump, a VRT3 unloader, and a regulator. Purchase this convenient grouping of parts to ensure you have properly sized pressure regulating devices and make ordering easier.Perfect for professional pressure washing operators, this Comet ZWD4040G pump delivers up to 4.0 GPM. It has a reversible crankshaft for easy right or left-hand mounting with the direct drive flange. The crankcase is also reinforced to increase overall load capacity, and enlarged to offer more oil capacity and better lubrication at lower operating temperatures.