Dongfeng GX Right bumper support rod assembly 8406322-C6104

Constructed from a high-performance composite of seamless steel (support rod) and ductile cast iron (mounting brackets), the 8406322-C6104 assembly balances strength and impact resistance. The seamless steel rod exhibits excellent tensile strength (≥650 MPa) and bending resistance, avoiding permanent deformation under lateral forces (e.g., from curbs or debris impacts). The ductile cast iron brackets (QT450-10 grade) offer superior toughness, with a notched Izod impact strength of 15 J/cm² at 23°C—preventing cracking in low-temperature environments (-30°C). This material combination ensures the assembly withstands daily wear, road vibrations, and minor collisions, delivering a service life of over 8 years—outperforming aluminum or low-grade steel alternatives by 40%

Exclusively tailored for Dongfeng GX heavy-duty trucks (including cargo, long-haul, and dump variants), the 8406322-C6104 assembly strictly adheres to original equipment (OE) specifications. Manufactured using CNC machining for the support rod and precision casting for the brackets, it achieves dimensional accuracy within ±0.15mm—matching every mounting hole, contour, and connection point of the GX’s right bumper and frame. The assembly includes 4 pre-drilled M8 threaded holes (depth: 12mm) that align perfectly with the bumper’s reinforcement points and the truck’s frame rails, eliminating gaps that could cause rattling or misalignment. It is fully compatible with all Dongfeng GX models produced since 2021, including those with bumper guards or fog lights, requiring no modification to the vehicle’s original structure

Exposed to road salt, rain, mud, and humidity, the 8406322-C6104 assembly undergoes a rigorous three-step anti-corrosion treatment. First, a zinc phosphate pretreatment (14-16μm thick) creates a corrosion-resistant base and enhances coating adhesion. Second, an electrophoretic primer (20-23μm thick) provides uniform coverage—even in hard-to-reach areas like bracket crevices—to block moisture infiltration. Finally, a matte-black epoxy powder coating (80-90μm thick) meets ISO 10289 standards, passing 1200-hour neutral salt spray tests without red rust. This protection ensures the assembly resists degradation in coastal (saltwater), snowy (road salt), or industrial (chemical debris) areas, maintaining structural integrity and appearance for long-term use

The 8406322-C6104 assembly is designed for hassle-free installation, ideal for truck fleet maintenance teams. It comes with a comprehensive hardware kit that meets Dongfeng OE standards: 4 grade 10.9 high-strength bolts (with anti-loosening washers), 4 lock nuts, and 2 rubber gaskets (to prevent metal-to-metal friction and vibration). Installation requires only standard hand tools (13mm socket wrench) and can be completed by two technicians in 30-35 minutes: align the assembly with the bumper and frame mounting points, secure with bolts, and torque to 45±5 N·m (per Dongfeng’s safety specifications). The kit includes a clear installation guide with torque values and alignment marks, reducing errors and ensuring compliance with the truck’s bumper system safety standards. The assembly’s lightweight design (2.8kg) simplifies handling, while its powder-coated surface resists scratches during installation—maintaining a professional look for fleet vehicles