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Have 1999E350 7.3. Bushing let loose in tail shaft now floating on yoke. Try to find replacement tail shaft. Found one. So-called casting# are different on side. Should I concern myself. Will be going in to Tranny place Monday. Old casting # is RF-F8IP-7A040-AA. Replacement# is RF-F5TP- 7A040-AA. Any opinion ? Should and will it fit. And yes I will question why it happen and will replace u joints and check yoke itself Replacement Old one
Tail shaft question
