Like the title says what motors have the same knock sensor as the H series? My dad just had to break mine and I don't feel like paying $140 for a new one or even $50-60 for a used one. I have a pick-n-pull near me and plan to run up there and try to find one. I just wanted to know if any other engines had the same knock sensor. I doubt I can find any B series up there so I doubt that would be a choice if they are compatible. Any help would be appreciated.