TCI GM Speedometer Gear Housing, 7/8" diameter for 18-23 tooth gears H777C06S accept most standard thermostats and

accept most standard thermostats and swivel a full 360° to simplify connection of LH or RH radiator hoses to engine

We use multi-stage heat treating

These features are in addition to the existing programmable step retard

Saves replacing again and again

TCI GM Speedometer Gear Housing, 7/8" diameter for 18-23 tooth gears H777C06S accept most standard thermostats andPowerglide TH350 Driven Gear Housing.. Driven Gear Housing for Powerglide TH350 with 18 23 Tooth Count Speedo Gear. Speedometer gears include both the drive gear and the driven gear. The drive gear refers to the gear that is on a transmissions output shaft. The driven gear is located in a removable housing, usually in the tailhousing, of transmissions. Be aware that some transmissions will have different driven gear housings depending on the tooth