Walbro In-Tank Fuel Pump Filter SpecificationsSpecially designed for in-tank fuel pumps this filter (also known as a pre-filter) offers the fuel system a first line of protection against various types of contamination including dust dirt and other fine particles found in petrol.Over time petrol can also leave a thick layer of varnish on everything inside the tank: internal components of the pump walls pre-filter... This phenomenon can affect the strainer resulting in restricted flow forcing the pump to work harder which can affect the pump's lifespan.Made from polyamide this 50 mm long 105 mm wide filter has a filtration capacity of 80 microns and an 11 mm outlet. It is compatible with regular unleaded petrol up to E85.