Briggs & Stratton Genuine OEM 6039 Pressure Washer Pump Saver 4 oz. (2 Pack) Protects the pistons of your pressure washer and seals them from damage Uses a unique anti-freeze and lubricant formula 4 oz. bottle can be used with most brands of pressure washers For use before extended storage and prior to startup the following season to keep your pump running on full blast Includes (2) 4 oz. pump saver bottles