Complete pump/motor/gearbox/regulator, expertly assembled by our mechanics and ready to drop into place on your spray rig. This package includes a Hypro D30 diaphragm pump, a genuine POWER PRO 6.5 HP gas engine, the Hypro gearbox to attach the pump to the motor, and a GS40GI Hypro regulator pressure relief valve. (12 mon warranty workmanship & design). When shipped, we detach the regulator so that it is not damaged in shipping. But the pump/engine and gearbox are completely assembled and oiled. Just bolt down the engine, attach your hoses and you are ready to spray. The regulator has two pressure outlets and one return line (to the tank). You can operate two spray guns with this assembly, or use one pressure line to agitate the tank. Duplex diaphragm pump. 8.5 gpm, 550 psi. 5.5 horsepower genuine Honda gas engine 4 bolt holes required includes pressure relief valve with guage 65 lbs.