Product review (4 stars): Works great!
I used this to replace the start relay, overload, and capacitor on a True Upright Beverage Cooler with a 1/3 horsepower compressor.  Keep in mind that these are manufactured for the horse power of the compressor, if you can see the part or model number, Google it to find out what the horsepower is for the compressor you have and purchase the appropriate Supco Start Kit.