It’s basically the metal skeleton of your rear door. It gives the door its shape and structural integrity. Everything attaches to it – the outer skin, the glass, the internal mechanism for the window rolling up and down, the door lock parts, even where the hinges bolt on. It holds it all together, keeps everything aligned, and lets the door operate smoothly. Think of it as a core component of the whole door assembly. It’s not something you see directly when the door is closed, but it’s absolutely crucial for the door’s function and also plays a part in the overall safety of the vehicle. It contributes to side impact protection—acts like a shield in a crash. It’s what allows the door to latch securely and helps keep the interior sealed up from the weather. Well, if this gets damaged – maybe from a serious ding, a rust – through, or a collision – the door will be floppy, won’t close properly, and can be a real safety hazard. You’ll notice if it's bent or broken because the door won’t line up right with the rest of the car. The window might not roll up and down smoothly, or at all. You might find it really hard to get the door to latch securely. If it's severely rusted, it can actually compromise the structural integrity of the car. You can find replacements fairly easily – places like Fixparts Online carry these, so getting a good one isn’t usually a huge deal. It’s one of those parts where maintaining it, or replacing it if it’s gone bad, is a really important safety issue. Reliable performance guaranteed: Door Frame (MPN A3227200805) has a 12-month warranty!

Why Choose Mercedes-Benz Trucks?

• Keep your truck running its best with parts made specifically for it. That means a better fit and reliable performance. • Genuine Mercedes-Benz parts are built to last, helping you avoid costly repairs and downtime on the road. • We offer a wide range of parts, from routine maintenance items to complex engine components, all readily available. • Trust the quality and expertise of Mercedes-Benz – we stand behind every part we sell, ensuring peace of mind for you and your business. FixParts Online – Your Trusted Source for Quality Mercedes-Benz Trucks Auto Parts.