Dongfeng VL truck parts Lower right wheel cover 8403450-C4300

Built to withstand frequent impacts from road debris (e.g., stones, gravel) and minor collisions with curbs, the wheel cover is crafted from a high-performance PP+TPO composite (80% polypropylene, 20% thermoplastic olefin). This material delivers exceptional impact resistance (notched Izod strength: 12 kJ/m² at -30°C) to avoid cracking in cold climates, while maintaining flexibility to absorb shocks from uneven terrain. It resists heat deformation up to 115°C, retaining shape under direct sunlight or heat radiated from the brake system—preventing warping that could rub against the tire. The composite also has excellent chemical resistance, withstanding exposure to road salt, brake fluid, and diesel fuel without discoloration or degradation (tested to 500 hours of chemical immersion). Compared to brittle ABS plastic covers, this PP+TPO design extends service life by 65% under heavy-duty use, retaining structural integrity for over 100,000 km

Engineered to shield critical components from damage, the wheel cover integrates three key protective features: a reinforced leading edge (3mm-thick composite) that blocks forward-moving debris from hitting the wheel hub or brake caliper, reducing wear on brake pads by 30%; a raised inner lip (25mm tall) that traps mud and water inside the wheel arch, preventing it from splashing onto the chassis wiring harness or fuel lines; and a textured inner surface that dissipates impact energy from flying stones, minimizing dents. Unlike basic flat wheel covers that offer minimal protection, this design ensures the VL’s right rear wheel assembly, brake system, and chassis components stay protected in harsh environments (e.g., construction sites, unpaved mining roads)

The wheel cover’s shape is aerodynamically engineered to reduce air resistance around the rear wheel—one of the main sources of drag for heavy trucks. Its curved outer surface (radius 320mm) guides airflow smoothly around the wheel arch, reducing turbulence by 22% compared to uncovered wheel wells. Testing confirms this aerodynamic design lowers the VL’s overall drag coefficient by 0.015, translating to a 3% improvement in fuel efficiency during long-haul highway driving (equivalent to saving ~1.2L of diesel per 100km). The cover also includes a small air vent (50mm×30mm) at the rear to release trapped air, further minimizing drag and preventing pressure buildup that could lift the cover at high speeds. This balance of protection and aerodynamics makes it ideal for Dongfeng VL’s long-distance transport applications

Designed for hassle-free replacement by fleet technicians, the wheel cover comes with a complete hardware kit and precision mounting features. It includes 8 grade 304 stainless steel M6×25mm bolts (rust-resistant, even in saltwater environments) and 8 plastic washers that protect the cover’s surface from bolt indentation. The cover’s pre-drilled mounting holes (drilled to H9 tolerance) align perfectly with the VL’s chassis side rail holes, reducing installation time to 30–40 minutes. No drilling or welding is needed—simply position the cover over the wheel arch, secure the bolts to 10 N·m torque (per OEM specifications), and verify no contact with the tire. The package also includes a tube of automotive-grade sealant for the mounting edge, preventing water from seeping into the chassis. Each unit undergoes dimensional inspection via CMM, impact testing, and aerodynamic performance checks, backed by a 18-month warranty against defects (e.g., cracking, warping, hardware rusting)