Im not familiar with those part numbers but one would have to assume they are for a 12 volt system with those kind of numbers....13.5 and 14.5. I do know that regulators come with different amperage ratings. If your using a later model 12 volt generator it may be nice to know what amperage output it is capable of. If it is a typical mid 50s 30-35 amp generator and you install a 20 amp rated regulator your generator will never put out more than what the regulator will allow it to...20 amps. So if output is important to you this is something to consider.