Dongfeng KL truck parts Lower bunk board assembly 7600920-C3307

Built as the core support structure for the lower bunk, this assembly features exceptional load-bearing performance to guarantee driver safety during rest. The bed board adopts a composite structure: a high-density plywood core (18mm thickness) reinforced with glass fiber mesh, covered by a 3mm-thick melamine-faced board. This design achieves a uniform load-bearing capacity of 250kg—easily supporting adult drivers and personal belongings without bending or deformation. The bottom integrates 6 aluminum alloy support beams (spaced 300mm apart) that distribute weight evenly across the bunk frame, limiting maximum deflection to ≤3mm under full load. It passes 100,000-cycle load testing (simulating 5 years of use) without structural damage, far exceeding industry durability standards

Engineered to optimize driver comfort during long-haul breaks, the 7600920-C3307 bunk board integrates human-centric design elements. The melamine surface features a matte, non-slip texture that prevents bedding from shifting during cab vibration, while its smooth finish avoids irritation to the skin. The board’s 25mm thickness provides balanced rigidity and elasticity—firm enough to support the body evenly, yet with slight cushioning to reduce pressure points on the back and shoulders. It includes pre-cut ventilation slots (10mm width, spaced 150mm apart) that enhance air circulation under the mattress, preventing moisture buildup and ensuring a dry resting environment. The edges are rounded (R5mm) to eliminate sharp corners, avoiding scratches when making the bed or accessing the bunk

Optimized to withstand the harsh conditions of truck cabs, the bunk board assembly features durable and low-maintenance materials. The melamine-faced surface is water-resistant, oil-repellent, and stain-proof—resisting spills from drinks, engine oil, or dirt. Stains can be wiped off with a damp cloth in seconds, and the surface is scratch-resistant (pencil hardness ≥2H) to endure daily use like placing luggage or tools. The plywood core undergoes moisture-proof treatment, with a water absorption rate ≤8% (ASTM D1037) to prevent warping in humid cab environments. The aluminum alloy support beams are anodized to resist corrosion, ensuring the entire assembly maintains structural integrity even in extreme temperatures (-40℃ to 85℃)

This lower bunk board assembly is designed for efficient installation and long-term cost savings for Dongfeng KL operators. The lightweight structure (total weight 12kg) allows a single technician to install it in 30 minutes—simply placing it on the bunk frame and securing it with the built-in locking clips, no tools required. The OE-compatible design ensures perfect alignment with the sleeper’s interior, avoiding the mismatched gaps common with aftermarket boards that compromise comfort and safety. The durable composite material extends service life to ≥600,000km—three times that of ordinary wooden boards—reducing replacement frequency. By providing a stable, comfortable resting surface, it improves driver fatigue recovery, boosting operational efficiency. Backed by a 2-year/300,000km Dongfeng warranty, it offers reliable support with predictable maintenance expenses