1Applicable Models: Spark plug is fit for Outboard 9.9HP 9.9MSHD Cylinder Crankcase, for Outboard 40HP 40TLRB Cylinder Crankcase, and for Outboard 8HP 8MSHD Cylinder Crankcase. 2OE Number: The part number of reference is 94702 00217, please confirm whether it is consistent with the OE you need. 3Stable Function: Outboard spark plug is an important part of the outboard engine, the main role is to generate a spark to ignite the fuel mixture to promote the combustion of the engine and work. 4Excellent Ignition: The spark plugs are made of high grade materials, which can maintain stable ignition performance and make the engine start and run more reliably. 5Highly Efficient: Engine spark plugs can promote the combustion of fuel mixture, so that the engine power and efficiency can be improved and the performance of outboard engines can be enhanced.