Tune-up kit for Johnson and Evinrude outboard motor applications. Kit includes 2 each of the contact sets (points) part # 18-5156 (580148), condensers part # 18-5205 (581419).<br><br> Replaces OMC Part # 172523<br> Replaces Sierra Part # 18-5002<br> For the following applications: <br> 18 hp 1962-1973<br> 20 hp 1962-1973<br> 25 hp 1969-1976<br> 28 hp 1962-1964<br> 33 hp 1965-1970<br> 40 hp 1962-1973<br>