New box of AC Marine Spark Plugs M43FF.
These are used by many Outboard motors such as Mercury, Mariner, Force, Honda, Johnson, Evinrude, and Yamaha. Also used in many ATV and a host of other small engines.
Other part numbers for this plug are as follows, but please verify for yourself. Not responsible for application errors.
Mercury, Mariner, Force: 33-48370, 33-82370M, 33-72983, F5H234, F5H235
Honda: 98076-56710, 98076-56740