Dongfeng GX truck parts Blind outside rearview mirror support rod assembly 8219120-C6200

To maintain clear blind-spot visibility, the 8219120-C6200 support rod integrates anti-vibration and wind-resistant features. The rod’s base is equipped with a rubber damping washer (shore hardness: 60±5A) that absorbs 70% of road vibration (frequency range: 10-2000 Hz), reducing mirror shake by 80% compared to standard support rods. The rod’s upper end features a precision-machined ball-and-socket joint with a friction washer, allowing 360° angular adjustment of the mirror while maintaining position stability—even under strong crosswinds. Wind tunnel tests show the rod’s streamlined tubular shape reduces aerodynamic drag by 30% compared to solid rods, minimizing wind noise (reducing cabin noise by 4-6 dB at highway speeds) and preventing wind-induced mirror flutter that blurs visibility

Exposed to rain, road salt, humidity, and UV radiation, the 8219120-C6200 support rod undergoes a rigorous anti-corrosion treatment to extend service life. The process includes: 1) zinc phosphate pretreatment (10-12μm thick) for coating adhesion; 2) electrophoretic primer (15-20μm thick) for uniform corrosion resistance, even in tube inner walls; 3) black epoxy powder coating (60-70μm thick) that meets ISO 10289 standards. This system passes 1000-hour neutral salt spray tests without red rust, protecting the rod from corrosion in coastal, snowy, or industrial areas. The ball-and-socket joint is further plated with hard chrome (plating thickness: 8μm) to resist wear and rust, ensuring smooth adjustment for over 5000 cycles—maintaining long-term functionality

Exclusively tailored for Dongfeng GX heavy-duty trucks (including cargo, long-haul, and dump truck variants), the 8219120-C6200 support rod strictly adheres to original equipment (OE) specifications. Manufactured using CNC machining and precision tube bending, it achieves dimensional accuracy within ±0.15mm—perfectly aligning with the truck’s cab side mounting points and blind mirror interface. The rod’s overall length (450mm) and bending angle (15°) are calibrated to match the GX’s cab contour, ensuring the blind mirror is positioned at the optimal height (1.8-2.0m from the ground) for maximum blind-spot coverage. It is fully compatible with all Dongfeng GX models produced since 2022, including those with extended cabs, and uses the truck’s factory mounting holes—no drilling or modification required for installation

The 8219120-C6200 support rod assembly is designed for hassle-free installation and flexible adjustment, ideal for truck fleets and repair facilities. It comes with a complete hardware kit: 4 grade 8.8 high-strength bolts (M8×20mm), lock nuts, washers, and a rubber damping washer—eliminating the need for separate part sourcing. The rod’s base features 4 pre-drilled mounting holes that align with the GX’s cab side brackets, allowing two technicians to install it in 20-25 minutes (35% faster than non-OE rods). The upper ball-and-socket joint includes a locking knob that enables tool-free angular adjustment of the blind mirror, letting drivers fine-tune visibility to their height and driving position. For maintenance, the powder-coated surface can be cleaned with a damp cloth to remove dust or road grime, and the joint requires only occasional lubrication with lithium grease (included in the kit) to maintain smooth adjustment