I would get what butramp1 said for sizes.
We have a place called Tacoma screw,you have a place in your town, to get all the different thread patterns to see what fits.
We did this on our force 125hp, it feels good to look down at the temp guage and know your motor isn't burning up, but it takes away from a priceless day on the water. We have twin 115HP no temp guage and its alot better.
We do perfect maintance all the time and everythings going to be alright.The point,
Change the impeller every year and your motor wont burnup, go have a priceless day on the water with family and friends, don't worry about anything,everything s going to be alright.
