Dongfeng KL truck parts Right rear mudguard bracket assembly 8403054-C3100

Built as the core load-bearing component for the right rear mudguard, this bracket features a robust design to withstand dynamic and static forces. The main body is fabricated from Q550 high-strength steel via precision forging, with a 10mm-thick base and 8mm-thick triangular reinforcing ribs—achieving a static load capacity of 500kg, easily supporting the mudguard’s weight plus impact from road debris and water. The forging process enhances material density by 18% compared to stamping, preventing stress cracks. The bracket’s multi-point mounting design distributes load evenly across the rear axle, limiting deflection to ≤1mm under maximum load and preventing the mudguard from shaking or shifting during high-speed driving (up to 110km/h) or off-road operation

Engineered to resist corrosion and impact in the harsh under-vehicle environment, the 8403054-C3100 bracket adopts a comprehensive protective system. The entire component undergoes hot-dip galvanization (80μm thickness) for base rust prevention, followed by a 50μm ceramic-rich powder coating with exceptional adhesion. This dual-layer system passes 3000-hour neutral salt spray testing (ASTM B117) with no red rust, adapting to coastal humidity, road salt in snowy areas, and muddy construction sites. The powder coating also has high impact resistance (Izod impact strength ≥10J/m), withstanding collisions from gravel (up to 50km/h) without coating damage. Welding joints are sealed with anti-corrosion mastic, preventing moisture ingress and extending service life

Optimized to eliminate noise caused by mudguard vibration, the bracket integrates dedicated dampening features. It includes 6mm-thick EPDM rubber gaskets between the bracket and mudguard, as well as between the bracket and rear axle housing—absorbing 65% of vibration from the chassis (10-500Hz) and preventing metal-to-metal contact. These gaskets reduce operational noise to ≤40dB, eliminating the rattling sound common with unbuffered brackets during driving. The mounting bolts use flange nuts with nylon inserts (self-locking torque ≥20N·m), which prevent loosening even after 100,000km of operation, avoiding the need for periodic re-tightening. A drainage hole at the bracket’s bottom prevents water accumulation and corrosion

This right rear mudguard bracket is designed for efficient installation and long-term cost savings for Dongfeng KL operators. The pre-assembled structure (bracket + rubber gaskets + self-locking nuts + mounting bolts) allows a single technician to complete replacement in 60 minutes using only a torque wrench (target torque: 120±10N·m)—no welding or drilling required. The OE-compatible design ensures perfect alignment with the mudguard and rear axle, avoiding misfit issues of aftermarket brackets that cause mudguard damage or water splashing (repair costs up to $800). The high-strength steel and corrosion-resistant coating extend service life to ≥800,000km—twice that of non-OE alternatives—reducing replacement frequency. Backed by a 3-year/500,000km Dongfeng warranty, it provides reliable support and predictable maintenance expenses