Dongfeng GX truck parts Left adjustment mechanism assembly 8407249-C6102

Unlike basic adjustment parts, the 8407249-C6102 features an integrated structural framework that combines a steel mounting base, aluminum alloy adjustment housing, and hardened steel lead screw—creating a rigid system that resists deformation under load. The mounting base (5mm-thick Q355B steel) provides a stable anchor to the truck’s left chassis rail, while the aluminum housing (6061-T6 alloy) balances lightweight performance and impact resistance. The lead screw (hardened to HRC 50-55) withstands axial loads of up to 300N without bending, ensuring smooth adjustment even when components (e.g., heavy left spoilers) exert pressure. A built-in anti-backlash washer also eliminates thread play, preventing position drift and ensuring consistent adjustment feedback for operators

The assembly’s key components are selected for long-term durability in harsh truck environments: the steel base and lead screw undergo a three-step anti-corrosion process (zinc phosphate pretreatment → electrophoretic primer → polyester powder coating) to resist rust and chemical damage, passing 1200-hour neutral salt spray tests with no red rust. The aluminum housing is anodized (10μm-thick) to prevent oxidation, while the adjustment knob features a rubberized thermoplastic grip that resists wear and UV damage (passing 1500-hour xenon aging tests). This multi-layer protection ensures the mechanism functions reliably in coastal (saltwater spray), snowy (de-icing salts), or dusty environments, with a service life of over 8 years

Exclusively tailored for Dongfeng GX heavy-duty trucks (compatible with 2020+ cargo, long-haul, and dump variants), the 8407249-C6102 adheres strictly to original equipment (OE) specifications. Manufactured using 3D laser scanning of the GX’s left chassis mounting points and target component interfaces, it achieves dimensional accuracy within ±0.15mm—matching every mounting hole, thread pattern, and component contour of the factory design. The assembly includes 4 pre-drilled mounting holes (M8 threaded, 18mm depth) that align perfectly with the GX’s left chassis reinforcement brackets, eliminating the need for on-site drilling (which weakens chassis integrity). It also features a 10mm offset design that matches the GX’s left-side component routing, ensuring no interference with adjacent parts (e.g., wiring harnesses, sensor connectors)

The 8407249-C6102 is designed for efficient installation and easy operation, ideal for fleet maintenance teams. It comes with a complete OE-spec hardware kit: 4 grade 10.9 high-strength bolts (with anti-loosening nylon washers), 4 lock nuts, and a torque wrench adapter. Installation requires only standard hand tools and can be completed by two technicians in 25-30 minutes: align the mechanism with the chassis mounting points, secure the base bolts to 45±3 N·m (per Dongfeng’s torque specifications), and attach the target component to the adjustment plate. The rubberized adjustment knob allows tool-free operation, enabling operators to fine-tune positions without wrenches, while a built-in position lock lever secures the adjusted position with a simple flip—preventing accidental movement during vehicle operation. This user-friendly design reduces maintenance time and ensures consistent, error-free adjustments