Dongfeng GX Rear mudguard left bracket assembly 8403075-C6103

To endure the harsh under-vehicle conditions (rain, road salt, humidity, and industrial dust) that commercial vehicles face, the 8403075-C6103 bracket undergoes a rigorous three-step anti-corrosion process. First, a zinc phosphate pretreatment (12-14μm thick) creates a corrosion-resistant base and enhances coating adhesion. Next, an electrophoretic primer (23-27μm thick) provides uniform coverage—even in hard-to-reach rib crevices—blocking moisture from contacting the steel. The final layer is a black polyester powder coating (78-88μm thick) that meets ISO 10289 standards, passing 1300-hour neutral salt spray tests without red rust or coating peeling. This protection ensures the bracket maintains structural integrity for over 9.5 years—even in coastal or high-salt regions—reducing maintenance costs and replacement frequency

Exclusively tailored for Dongfeng GX commercial vehicles (including heavy-duty trucks and cargo models), this rear mudguard left bracket strictly adheres to original equipment (OE) specifications of part number 8403075-C6103. Manufactured using 3D laser cutting and robotic welding technology, it achieves dimensional accuracy within ±0.18mm—perfectly aligning with the Dongfeng GX’s rear axle frame, mudguard mounting points, and underbody contour. The bracket’s overall dimensions (length: 410mm × width: 175mm × height: 135mm) match the vehicle’s underbody space exactly, eliminating gaps that could cause abnormal noise, mud accumulation, or stress concentration. It is fully compatible with all Dongfeng GX models produced since 2021, including those with dual rear wheels, making it a direct replacement part for factory assembly or after-sales repairs—no trimming or drilling required

Beyond basic support, the 8403075-C6103 bracket is engineered to optimize the rear mudguard’s protective function. It features a precision-machined mudguard interface with 7 M10 threaded holes (16mm depth) that secure the mudguard at a 16° angle—this angle redirects water and debris downward, minimizing splashing on following vehicles while preventing mud from lodging between the bracket and mudguard. The bracket also includes a 2.2mm-thick rubber cushion pad at each mounting interface, which absorbs 65% of vibration between the bracket and mudguard, reducing wear on both components and extending the mudguard’s service life by 35%. Additionally, the bracket’s lower edge is curved to avoid interfering with the rear wheel’s movement, even when the vehicle is fully loaded (up to the GX’s maximum payload capacity)

The 8403075-C6103 bracket assembly is designed for user-friendly installation and minimal upkeep. It comes with a complete hardware kit, including 7 grade 8.8 high-strength bolts, lock nuts, washers, and rubber cushion pads—eliminating the need for separate part sourcing. The bracket’s lightweight design (7.1kg) and clear laser-engraved alignment marks allow two technicians to install it in 22-28 minutes, 45% faster than non-OE brackets that require custom modifications. For maintenance, the smooth powder-coated surface can be cleaned with a damp cloth to remove mud or debris, and the robust structure requires no periodic inspections beyond standard vehicle servicing. It also includes a 24-month warranty against material defects (e.g., welding cracks, coating peeling) and manufacturing errors, providing confidence for Dongfeng GX owners and repair facilities