THAT IS THE RIGHT CAP.
That is the cap.for your machine.The original cap.was243-295 MFD.This is the range you need.A cap.either works or it does'nt.If it is not working you will know.The motor will hum and not turn.This is a start cap.only,not a start and run cap.If it works and it is clean with no corrosion on the terminal area put it back in.Make sure you put the cardboard piece in the cover first before you put it all back together.This will keep the cap. firmly in place as not to rattle during a spin.This is a case of ,IF IT'S NOT BROKEN DON'T FIX IT.This is a great machine.And very fixable.Out of all the 6 styles I have of the 53 thru 58 Duomatics I like this one the most.Sometimes the magic heaters go out.One sure way is if for some reason there is no water in the tub.That will destroy it instantly.Keep in mind the tub back and bearings and seal should all be replaced.This is the time to do it.I can give you the order numbers for all that stuff should you decide to do that.Also I can guide you through the bearing replacement process.It is easy,But a little work.Done it at least a dozen times or so.It would be worth your while to do it.Your machine will be in service for years to come!BEST OF LUCK ON YOUR WELL WORTH IT PROJECT!Wish I was closer I could help you get that machine in perfect condition in no time at all.