* On the side of the transmission case: Look near the bellhousing, often towards the passenger side (right side) of the vehicle. This is a frequently used location.
* On the top of the transmission case: Sometimes, but less frequently than the side.
* On the bottom of the transmission case: This location is less accessible and often obscured by dirt and grime.
The casting number will be a series of numbers, sometimes including letters. This number will help identify the specific version and year of the TH350 transmission. You may need a flashlight and possibly a wire brush to clean away grime for better visibility.
