Speedometer 34_39 Tooth Gear Housing and Viton O_Ring_ fits GM TH350 TH350C TH THM_350 C K35923A

Plastic Speed-O-Meter "Speedo" Gear Housing Sleeve Adapter with Viton O-Ring Seal ------Perfect for High-Performance, Heavy-Duty, Racing and Regular-Duty for the following General Motors transmissions: -----TH350 Non-Lockup 1969-1979, TH350C Lock-up 1980-1986, THM-700R4 (4L60) 1982-On, TH-250 Non-Lockup 1969-1979, TH250C Lockup 1980-1984, GM TH200, GM TH200C ------ In certain very rare vehicles, if the housing doesn't fit, then you may have to sand down the exterior of the housing to to make it fit (do not hammer it in).