Dongfeng GX Left toolbox door hinge assembly 5407021-C6100

Built to withstand daily use and harsh operating environments, the 5407021-C6100 hinge assembly features a robust structure. The main bracket is crafted from cold-rolled steel (Q235 grade) with a tensile strength of ≥400 MPa, resisting bending or deformation even when the toolbox door is fully loaded or subjected to accidental impacts. The hinge pin is made of stainless steel (304 grade), offering excellent corrosion resistance to prevent rusting caused by rain, road salt, or moisture inside the toolbox. Additionally, the assembly undergoes a electrophoretic coating process, creating a protective layer that withstands 500-hour salt spray tests. This durable construction ensures the hinge maintains stable performance for years, reducing the need for frequent replacements

A key advantage of the 5407021-C6100 assembly is its smooth rotation mechanism, designed to enhance the usability of Dongfeng GX’s left toolbox. The hinge pin is treated with a high-performance lubricant (PTFE-based) that reduces friction, allowing the toolbox door to open and close with minimal force—even after long-term use. The hinge’s rotation angle is optimized to 180 degrees, providing full access to the toolbox interior, which is essential for retrieving large tools or equipment. Additionally, the hinge features a built-in detent at the 90-degree position, holding the door open securely to prevent it from closing accidentally while the user is working. This thoughtful design improves operational efficiency and user convenience, especially in busy work scenarios

The 5407021-C6100 hinge assembly is designed for easy installation, catering to both professional technicians and DIY users. It comes with all necessary mounting hardware, including high-strength bolts and lock washers, pre-packaged to avoid the need for separate purchases. The bracket features clear alignment marks that match the toolbox’s original mounting points, simplifying the positioning process. Installation requires only basic hand tools (a socket wrench and screwdriver) and can be completed in 30 minutes or less—critical for minimizing vehicle downtime, especially for commercial vehicles that rely on toolbox access for daily operations. A step-by-step installation guide with diagrams is also included, ensuring correct fitment and avoiding errors that could affect hinge performance

Beyond structural performance, the 5407021-C6100 assembly incorporates weather-resistant design elements to protect the contents of Dongfeng GX’s left toolbox. The hinge’s bracket edges are sealed with a rubber gasket that creates a tight seal between the toolbox door and frame, preventing water, dust, or debris from entering the interior. This is particularly important for vehicles operating in harsh environments, such as construction sites or rainy regions, where toolbox contents (like tools, spare parts, or documents) need to stay dry and clean. The stainless steel pin and electrophoretic coating further enhance resistance to corrosion caused by moisture, ensuring the hinge remains functional even in humid conditions. By safeguarding the toolbox interior, this hinge assembly helps preserve the value and usability of stored items, adding long-term value to the vehicle