I'm not exactly sure what model year this servo was started for each different Mopar model, but for Cudas and Challengers these servos were used from 1970 on up into the late 70's or early 80s for everything else. I know this servo was used in everything Mopar made in the 70's from cars to trucks to vans. The thing you really have to watch for is the cruise lever. This type of cruise servo will only work with the four wire cruise lever, not the earlier 3 wire. Without getting too carried away about cruise levers, there are two basic types that look different on the business end, but they operate exactly the same. The main takeaway here is that they need to have four wires coming out of the cruise lever. I believe the four wire colors are white, yellow, blue, and black. Just as a heads up for these cruise levers, you do need to be careful about the switch side as they are not all the same. Some cruise lever connectors to the switch have just a hole, some a small threaded hole with the common Mopar stops built into the end, others have a straight male threads on the end. What I'm trying to say is that there are many different ends out there to hook into the turn signal switch, you really have to be careful and know which one your looking for. Then there are ones that are longer and have different angles -- but that's a whole different discussion.

Good luck!!!

Mark