The Hypro D403 is a medium pressure pump that is perfect for the pumping and spraying of herbicides, pesticides, liquid fertilizers and many other hard-to-handle liquids. The Hypro D403 is available by itself, available with a gearbox and regulator (Hypro D403GRGI) or available with gearbox, regulator and 5.5 HP Honda engine (Hypro D403GRGI with 5.5HP Honda engine). Also available is a Hypro Gearbox Kit, D403 Regulator, Diaphragm Kit and Valve Kit to keep your Hypro D403 in excellent working order.