Dongfeng KL truck parts Front top and bottom plate process assembly 5704910-C3353

Designed to reinforce the cab’s front end and shield internal components, the assembly combines two critical functions. The front top plate (mounted below the windshield) acts as a reinforcement beam, distributing impact forces (e.g., from minor collisions or debris) across the cab’s front frame—reducing deformation by 35% compared to unsupported cabs. The front bottom plate (mounted above the front bumper) serves as a protective shield for under-cab components (e.g., cooling system hoses, electrical wiring) against road gravel, mud, and water splashes. Both plates feature integrated ribbing (15mm height) optimized via finite element analysis (FEA) to enhance load-bearing capacity without adding excess weight. Unlike，flat plates that bend under stress, this dual-design assembly maintains cab structural stability and protects vulnerable components during long-haul or off-road operation

Built to withstand the harsh conditions of commercial truck use—including impact, vibration, and exposure to road salt—the assembly uses premium materials. Both top and bottom plates are crafted from DC06 cold-rolled steel (a high-formability, high-strength material) with a tensile strength of 340–420 MPa, ensuring durability without sacrificing flexibility. The plates undergo a comprehensive anti-corrosion treatment: first, a zinc coating (20μm thickness) via hot-dip galvanizing, then a layer of epoxy primer (40μm) and a topcoat of acrylic enamel (30μm) in the original Dongfeng KL cab color. This multi-layer finish passes 1,000 hours of neutral salt spray testing without red rust, outperforming standard painted steel by 200% in corrosion resistance. Unlike uncoated or single-layer painted plates that rust within 2–3 years, this construction ensures the assembly lasts 6+ years in harsh environments

Engineered to improve fuel efficiency and cab comfort, the assembly includes aerodynamic and sealing features. The front top plate’s leading edge is angled at 15° to reduce wind resistance, lowering the truck’s drag coefficient by 0.02—translating to a 2–3% improvement in fuel efficiency during highway driving. Both plates integrate EPDM rubber gaskets along their edges, which compress against adjacent cab components (windshield, bumper, frame) to create a tight seal. This seal blocks 90% of wind noise from entering the cab (reducing interior noise by 10 dB at 90 km/h) and prevents rainwater, dust, and snow from seeping into the cab or under-cab areas. Unlike unsealed plates that contribute to noise and water damage, this design enhances driver comfort and reduces maintenance costs from corrosion or component failure

Designed for efficient replacement by fleet technicians or body shops, the assembly simplifies installation with user-friendly features. It includes all necessary hardware: 24 OEM-specification bolts (M8×25mm), lock washers, and matching gaskets—no additional parts or modifications required. The plates have pre-marked alignment indicators that match reference points on the cab frame, ensuring accurate positioning without measuring. Installation takes 60–90 minutes with standard hand tools (e.g., socket wrench, torque wrench), as the assembly fits seamlessly with existing Dongfeng KL components (windshield, grille, bumper). Each unit undergoes strict quality checks: dimensional verification via coordinate measuring machine (CMM), load-bearing testing, and corrosion resistance trials. Backed by a 24-month warranty against manufacturing defects (e.g., plate bending, coating peeling, gasket failure), it provides Dongfeng KL truck owners with reliable front cab reinforcement and long-term performance