The SeaSierra outboard fuel connector hose fitting is designed to replace most marine fuel tank to engine connection components This primer bulb fits Yamaha Tohatsu Mercury Mariner Johnson Evinrude OMC Honda etc. outboard motors Contain a 5/16 Inch 8MM inner diameter fuel line primer bulb Its primary purpose is to manually transfer fuel from the tank to the engine to ensure smooth starting of the outboard motor This product is made of rubber so please do not store it in direct sunlight or other harsh environments

SeaSierra 5/16 Inch 8MM Universal Fuel Primer Pump Bulb for Yamaha Mercury Johnson Evinrude Outboard Motor