I just bought an Epic S22 and have been replacing a bunch of parts and shopping for them. If they aren't on the "Buy Parts" tab at the top of these pages on epicmarine.com then I am finding I go searching around for forum and people have mentioned replacement parts. Or, I'll copy the part number from the "Buy Parts" section of the site, then paste it into google with the type of part (Example: "Aisin water pump Toyota or Lexus V8"). I have had good luck so far, but I am buying pulleys, water pump, belts, etc and finding them. I am not buying more complex stuff yet. Buy OEM - the best advice anyone can give you...