Bosch 77111WS Workshop Fuel Filter Multi-layered Filter Media with excellent efficiency in filtering out particulates to protect the Fuel Injection System and Engine High dirt capacity designed to trap and hold more harmful particulates thus protecting the fuel system and engine Precise, reliable fuel filter connections for 100% Fuel Filtration Robust aluminum, plastic or surface-treated steel filter housing designed to withstand high pressure thus offering a longer fuel filter service life Multi-layered filter media with excellent efficiency in filtering out particulates to protect the fuel injection system and engine High dirt capacity designed to trap and hold more harmful particulates thus protecting the fuel system and engine Precise, reliable fuel filter connections for 100% fuel filtration Robust aluminum, plastic or surface-treated steel filter housing designed to withstand high pressure thus offering a longer fuel filter service life