TCI Speedometer Driven Gear GM 39 Tooth Brown RS003C0213 1/2" NPT x 3/8" hose

1/2" NPT x 3/8" hose barb adapters included

1966-72 tucks

exterior areas such as transmission tunnel

The precision-machined shutter wheel design ensures accurate timing

Radiator Support Bar

TCI Speedometer Driven Gear GM 39 Tooth Brown RS003C0213 1/2" NPT x 3/8" hoseGM 200C 375B TH425 475 700R4 39 Tooth Speedo Drive Gear.. 39 Tooth GM Speedo Drive 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 count of the driven gear. TCI