SeaSense Mercury/ Mariner or Yamaha two prong female engine or tank style connector. 3/8" outside diameter hose barb has Buna-N o-ring seal to ensure leak free connection with today's fuel including use with ethanol fuel. Stainless steel lever allows for a positive latching to mating connector. Manufactured from acetal. Resin. Works with all years of Yamaha outboard engines. Mercury and Mariner outboard engine 1988 to 1995 vintage.