Automatic Transmission Outer Lip Seal – Forward, Direct, Fourth Clutch (8623101 / 29520292). Compatible with / Fits GM And Allison Units 1969-1986 TH350, TH350C – Forward Clutch (Outer) 1973-1975 TH250 – Forward Clutch (Outer) 1980-1984 TH250C – Forward Clutch (Outer) 1964-1990 TH400 (3L80) – Forward / Direct Clutch (Outer) 1966-1978 TH425 – Forward / Direct Clutch (Outer) 1990-1996 4L80E – Forward / Direct Clutch (Outer, Long Lip) 1970-2001 AT540, AT542, AT543, AT545, AT1545 – Forward / Fourth Clutch (Outer)
