TH350 700R4 4L60E Tail Housing to Transmission Square Cut O-Ring, 1 Piece Case Style (1969-1997))

Product Description

This is the 1 piece case style, square cut o-ring that seals the transmission extension housing to transmission case.  This style was used in the TH350, 700R4 and 1 piece case style for the 4L60E that ended in early 1997.  The 2 piece case was started in 1996 and takes a larger o-ring.  1996-E1997 model years can be 2 piece or 1 piece cases.