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#229449
frankr
Participant

    580109 is superseded by 580212. Book sez 580212 fits RD-10 through RD-19. Having said that, the newer number will fit older motors where superseded, but in some cases a part from an older motor might not work in a newer motor. In your case, you are putting a 1953 on a 1951, so you should be good to go.