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. We’re here to help: Door Frame (MPN 42N-54-13611) has a 12-month warranty!

About Komatsu

Komatsu provides innovative and reliable machinery solutions designed to withstand the harshest conditions in construction and mining.

Why Choose Komatsu?

• Komatsu parts are built to last, meaning fewer repairs and more uptime for your equipment. • We use high-quality materials and precise manufacturing to ensure a perfect fit and reliable performance. • Genuine Komatsu parts help maintain the value of your machine and protect your investment. • Our extensive network means you can easily find the parts you need, when you need them, with fast shipping options. Komatsu – trusted quality, available at FixParts Online!