Dongfeng KL truck parts Side panel debris box bracket 5402121-C3300

Built as the core load-bearing component for the side panel debris box, this bracket features a robust design to secure the box during vehicle operation. The main body is fabricated from Q550 high-strength steel via precision stamping, with a 5mm-thick base and 6mm-thick reinforcing ribs—achieving a static load capacity of 80kg, easily supporting a fully loaded debris box (tools, cleaning supplies, and personal items). The bracket’s triangular rib structure optimizes force distribution, reducing deflection to ≤1mm under maximum load and preventing the debris box from sagging or shaking. It passes 200,000-cycle vibration testing (10-500Hz) without structural deformation, ensuring the box remains stable even on rough off-road terrain

Engineered to resist corrosion and wear in the harsh environment around the cab side panel, the 5402121-C3300 bracket adopts an advanced protective coating system. The entire component undergoes hot-dip galvanization (80μm thickness) for base rust prevention, followed by a cathodic electrophoretic primer (30μm thickness) and a textured powder coating (50μm thickness). This multi-layer system passes 2500-hour neutral salt spray testing (ASTM B117) with no rust, adapting to coastal regions, snowy areas (road salt exposure), and construction sites with high humidity. The powder coating also has anti-scratch properties (pencil hardness ≥2H), resisting scuffs from debris or tool contact during daily use

Optimized to eliminate noise caused by debris box vibration, the bracket integrates dedicated dampening features. It includes rubber gaskets (EPDM material, 3mm thickness) between the bracket and debris box, as well as between the bracket and side panel—absorbing vibration from the truck’s chassis and preventing metal-to-metal contact. These gaskets reduce operational noise to ≤35dB (quieter than a normal conversation), eliminating the rattling sound common with unbuffered brackets during driving. The bolt holes are equipped with self-locking nuts that prevent loosening over time, further ensuring the bracket and debris box remain securely fastened without noise-generating movement

This debris box bracket is designed for efficient installation and long-term cost savings for Dongfeng KL operators. The pre-assembled structure (bracket + gaskets + mounting hardware) allows a single technician to complete replacement in 30 minutes using only a socket wrench—no welding or drilling required. The OE-compatible design ensures perfect alignment with the side panel and debris box, avoiding the misfit issues of aftermarket brackets that cause box jamming or damage (repair costs up to $300). The high-strength steel and corrosion-resistant coating extend the bracket’s service life to ≥600,000km—twice that of non-OE alternatives—reducing replacement frequency. Backed by a 3-year/300,000km Dongfeng warranty, it provides reliable support and predictable maintenance expenses for fleet operations