Dongfeng GX truck part Middle bracket assembly 8406186-C6200

Constructed from 5mm-thick high-strength alloy steel (Q355B grade)—with 6mm-thick welded reinforcement at stress points (weld bead height: 5mm)—the 8406186-C6200 assembly balances rigidity and impact resistance. The steel exhibits a tensile strength of ≥510 MPa and yield strength of ≥345 MPa, enabling it to withstand heavy static loads and minor lateral impacts (e.g., from road debris) without bending or cracking. Finite element analysis (FEA) optimizes the crossbeam and support arm layout, reducing stress concentration by 42% compared to single-piece brackets. Unlike lightweight aluminum alternatives, it resists warping from extreme temperatures: maintaining shape at -35°C (cold climates) and 100°C (engine bay heat). This heavy-duty construction guarantees a service life of over 12 years, outperforming aluminum assemblies by 250% in harsh trucking environments (e.g., construction, mining, or long-haul)

Exclusively tailored for Dongfeng GX heavy-duty trucks (including cargo, dump, and tractor variants), the 8406186-C6200 assembly adheres strictly to original equipment (OE) specifications. Manufactured using 3D laser scanning of the GX’s mid-chassis rails and component mounting points, it achieves dimensional accuracy within ±0.1mm—matching every hole position, contour, and connection feature of the factory design. The assembly includes eight pre-drilled M10 threaded holes (depth: 15mm) that align perfectly with the truck’s chassis reinforcement brackets and mid-vehicle components, eliminating gaps that cause rattling, vibration-induced noise, or premature wear. It is fully compatible with all Dongfeng GX models produced since 2022 and works seamlessly with the truck’s original fasteners and adjustment mechanisms—requiring no drilling, grinding, or modification to the vehicle’s chassis

To combat rust and degradation from road salt, rain, mud, and industrial chemicals (common in mid-vehicle locations), the 8406186-C6200 assembly undergoes a five-step OE-grade anti-corrosion process. First, a zinc phosphate pretreatment (15-17μm thick) creates a porous base for coating adhesion. Second, an electrophoretic primer (22-25μm thick) provides uniform coverage—even in hard-to-reach weld joints and crevices—to block moisture infiltration. Third, an epoxy mid-coat (18-20μm thick) adds an extra barrier against road salts and acidic debris. Fourth, a cathodic electrocoat (10-12μm thick) enhances corrosion resistance for high-wear areas. Finally, a matte-black polyester powder coating (85-95μm thick) meets ISO 10289 standards, passing 1800-hour neutral salt spray tests without red rust formation. This protection ensures the assembly maintains structural integrity in coastal (saltwater), snowy (road salt), or industrial (chemical exposure) areas

The 8406186-C6200 assembly is designed for efficient, error-free installation—ideal for fleet maintenance teams or repair shops. It includes a comprehensive OE-spec hardware kit: eight grade 12.9 high-strength bolts (with anti-loosening nylon washers), eight lock nuts, six rubber anti-vibration gaskets (shore hardness: 60±5A), and four alignment pins for precise positioning. Installation requires only standard hand tools (14mm socket wrench) and can be completed by two technicians in 35-40 minutes: align the assembly with the chassis rails using the included pins, secure bolts to 60±5 N·m (per Dongfeng’s torque specifications), and attach the target component (e.g., fuel tank or exhaust). The kit includes a color-coded installation guide with torque values, step-by-step diagrams, and component alignment marks, minimizing errors. The assembly’s modular design (detachable support arms) simplifies handling, while its powder-coated surface resists scratches during installation—preserving a professional fleet appearance