Part Number: Replace for OEM #514009761. Feature: ▲ Fit various BLACK AND DECKER models. ▲ Designed to fit and function as the OE cap, replaces the factory 514009761 filler cap. ▲ This is a DEWALT replacement part, which is supplied by the original equipment manufacturer for use with Dewalt pressure washers. Function: ▲ Oil fill cap provides proper fit and sealing to ensure leak prevention and stop engine blow-by. ▲ Used to keep the oil in the pump, remove the cap to add the oil. Superior Material: Premium ABS plastic materials -- resisting impact and deformation with great durability and strong toughness Application: .