Can a 2003 dodge 1500 transmission be put in 1999 1500?

It's *possible* but highly unlikely a 2003 Dodge 1500 transmission will be a direct bolt-in replacement for a 1999 Dodge 1500. While they're both Dodge 1500s, there were significant changes in transmissions and drivetrain components between those model years. You'd need to verify the following:

* Transmission Type: The exact transmission type (e.g., 46RH, 47RE, 545RFE) needs to be identical or at least very closely compatible. Even a slight difference in the transmission model can mean incompatible bolt patterns, input/output shaft lengths, and electronic controls.

* Bolt Patterns: The transmission's bellhousing bolt pattern must match the engine. These changed over the years.

* Electronic Controls: The 2003 transmission likely uses a more advanced electronic control system than the 1999 model. This might require significant wiring modifications, potentially including a new transmission control module (TCM) and harness, which is a very complex undertaking.

* Torque Converter: The torque converter is crucial and must be compatible with both the transmission and the engine.

In short, while some parts *might* be interchangeable, a complete swap is a major undertaking that requires expert knowledge and likely significant modifications. It's much more likely to be easier and cheaper to find a used transmission specifically for a 1999 Dodge 1500. Trying to adapt a 2003 transmission could lead to considerable frustration and expense.