What is a door jamb?

A door jamb is the area on a vehicle where the door connects to the body of the car. While most car owners rarely thinking about door jambs when doing regular car cleaning, they provide housing for parts of a car that are essential for the door to open and close properly. That includes things like the hinges, strikers, and guides.

Part of a door jamb’s job is to act as a seal between the interior of the car and outside elements. That said, door jambs collect a lot of dirt and grime. Moreover, manufacturers often apply a generous coating of grease to keep the door from squeaking when opened and shut—grease that attracts dirt and grime.