Door latches for Dodge vehicles can be found at RockAuto.com. On the main page, check Dodge from the list of makes. Check the year, model of the vehicle and engine size. If available, door latches are found under the "body" category and labeled "door lock actuator." Alternatively, used car salvage yards are often filled with various models of vehicles, with parts the customer can remove himself for a small fee.
Door actuators, which are the latches that close and open the door, and door cylinders, which lock the door by using the ignition key, are important for safety and security, and should be replaced at the first sign of damage.
Most Dodge models, such as the Intrepid, Charger or Ram, have listings for door actuators, door lock cylinders, and outer door handles for each year. If a match is not found for the exact year, search for the previous year or the year after, as long as it is in the same generation of the model. Door parts often remain unchanged from model year to model year within a generation, making them interchangeable.
If a part cannot be found at Rock Auto or at a local salvage yard, there are several other websites that sell Dodge and Chrysler parts, including Mopar.com or FactoryChryslerParts.com.