Dongfeng VL truck spare parts Rear Suspension Cover Plate 2902105-ND500

Built as a frontline shield for the rear suspension, this cover plate effectively protects critical components from road debris, gravel, mud, and water. The 8mm-thick steel plate covers 90% of the suspension’s exposed mechanical parts, including leaf springs, bushings, and connecting bolts—preventing abrasion-induced wear that shortens component lifespan by 50%. In off-road or construction scenarios, it absorbs impact from rocks and potholes, reducing suspension beam deformation risks by 40%. The curved design redirects water and mud away from the suspension, minimizing rust formation on metal components and extending the interval between suspension maintenance by 30%

Engineered to endure the extreme stresses of heavy-duty truck operations, the cover plate is crafted from Q345B high-strength structural steel—offering a tensile strength of 510-620MPa and yield strength of ≥345MPa, 25% stronger than ordinary Q235 steel. It undergoes hot-rolling and shot blasting processes to eliminate internal stress, ensuring no deformation under the truck’s maximum load (40 tons). The edges are reinforced with 12mm-thick folded flanges, and the mounting hole peripheries feature 15mm-diameter reinforcing washers integrated into the plate, preventing bolt pull-out under vibration. Finite element analysis confirms it maintains structural integrity under 50g impact loads, far exceeding real-world road stress

Designed for the diverse operating environments of Dongfeng VL trucks—from coastal high-salt areas to dusty mining sites—the cover plate exhibits exceptional corrosion resistance. It undergoes a three-layer anti-corrosion treatment: zinc phosphate pretreatment, cathodic electrophoretic coating (80μm thickness), and topcoat powder coating (60μm thickness). This system passes 2000-hour neutral salt spray testing (ASTM B117) with no red rust, ensuring durability in coastal regions. The coating also resists UV aging and chemical corrosion from road de-icing salts, maintaining performance in temperatures ranging from -40℃ (northeast China winters) to 85℃ (southwest China summers). It requires no additional painting or maintenance during its service life

Optimized for efficient fleet maintenance, the rear suspension cover plate features a user-friendly design that simplifies installation and reduces downtime. It comes with 12 pre-matched M16×45 high-strength bolts and lock nuts, which align perfectly with the suspension beam’s original threaded holes. Installation requires only a torque wrench (220-240N·m) and takes two technicians 45 minutes to complete—50% faster than non-OE plates with mismatched mounting points. The plate’s lightweight design (18kg) ensures easy handling during installation, while its long service life (≥300,000km) minimizes replacement frequency. By protecting expensive suspension components from damage, it reduces maintenance costs by 40% over the truck’s lifespan, making it a cost-effective investment for fleet operators