Make all your deep-cleaning projects easier than ever before with the Westinghouse WPX4400 Pressure Washer. Item model number WPX4400. Heavy Duty Gas Powered 420cc 4-Stroke Westinghouse OHV Horizontal Shaft Engine with Recoil Start - Long Lasting, Maintenance-Free Triplex Brass Head Pump Provides 4.2 Gallons of Water a Minute.