Speedo Housing Leak Stop Seal Kit For TH400 TH375 TH475 Transmission Condition: Aftermarket Part Type: Seal Kit Fitment Type: Direct Replacement This seal kit is designed for use with TH375, TH400, TH475, and 3L80E transmissions from 1964 and up.The kit includes one housing, one speedometer shaft seal, and one speedometer shaft seal retainer.It provides a direct replacement solution for the speedometer driven gear housing seal to help prevent leaks and maintain transmission integrity.