I have a 70 hp johnson motor with an aluminum propeller. The propeller is stamped 13 x 19. I have someone that wants to sell me a prop that is stainless steel the size is 13 x 17. Both are 3 blades. Will the stainless one work?
You also need to check and make sure the hub has 13 splines. A hub splined for other than omc won't fit. However there are some exceptions to this and the prop can always be rehubbed. Check with Bauman's Propeller for cost on that.