what prop is this?

[mphy98]

the markings are on the prop 45H4 633G9 and 4874888A421P This is a spare prop that cam with my old boat I assume it fits but I want to be sure. 79 thundercraft 140hp 2ltr gm 1.98r merc outdrive serial #4798084.. also since this is my first IO any info on this drive would be appreciated. thanks bob will post outdrive on the proper forum.

 

[QC]

Re: what prop is this?

It's a It's a 13-3/4 x 21 Pitch. I am skeptical that a 140 can pull it, but maybe. It will definitely fit any 15 spline Merc shaft.