Vortexx Pro4000 4000 PSI Pressure Washer 4000HDThe Vortexx Professional 4000 PSI Pressure Washer proves tough doesn't have to be ugly. Vortexx has designed special features, like cut outs in the frame and oil drain holes to make servicing easy. The tough, all aluminum construction means this unit will easily hold its own. At the core is a powerful and dependable 390cc Honda GX Engine mated to a professional grade AR Triplex plunger pump. Contrary to popular belief, all pumps are not created equal