9.9 mariner 9.9M, # 682C S 070981. (1982-??)
I need a thermostat, Mercury site shows 3 different ones # 83282M, & 99080M, & 814554M.
Im looking to get a sierra #. From looking I think its
#18-3549, not sure though. I know the gasket # if that helps #18-0380. Thanks Edal
