Dongfeng KL truck parts Passenger Seat Belt Assembly 5810015-C3100

Built as a critical life-saving component, this seat belt assembly features a robust load-bearing structure to withstand severe crash impacts. The webbing is woven from high-tenacity polyester fiber (breaking strength ≥28kN), capable of absorbing 80% of the passenger’s kinetic energy during a 50km/h collision. The retractor incorporates a pyrotechnic pretensioner and load limiter—triggering within 10ms of a crash to tighten the webbing by 150mm, reducing passenger forward displacement, then releasing tension gradually to ≤6kN to avoid chest injury. The B-pillar anchor plate is made of Q690 high-strength steel (tensile strength 690MPa), resisting deformation even under extreme loads, ensuring the belt remains anchored during rollovers or frontal collisions

Engineered for long-term reliability in truck cabs—exposed to sunlight, temperature fluctuations, and occasional moisture—the 5810015-C3100 assembly uses durable, weatherproof materials. The polyester webbing undergoes UV-stabilization and anti-friction treatments, resisting fading (passing 3000-hour xenon lamp testing) and abrasion (withstanding 50,000 retraction cycles without fraying). The retractor housing is made of impact-resistant ABS plastic (UL94 V-0 grade) with a corrosion-resistant coating, protecting internal mechanisms from dust and condensation. The buckle’s metal components are galvanized and powder-coated, passing 1500-hour neutral salt spray testing (ASTM B117) with no rust, ensuring smooth latching/unlatching even in humid coastal or snowy regions

Optimized to balance safety and passenger comfort, the seat belt assembly integrates ergonomic and intelligent safety features. The 50mm-wide webbing distributes pressure evenly across the chest and hips, reducing discomfort during long hauls (8+ hours). A height-adjustable upper anchor (5-position adjustment) accommodates passengers of different statures (150-190cm), ensuring the webbing sits correctly across the shoulder. The retractor features an emergency locking mechanism (ELR) that locks the webbing during sudden deceleration or sharp turns, while allowing free movement during normal driving. A buckle warning switch connects to the cab’s instrument cluster, alerting the driver if the passenger fails to fasten the belt—complying with mandatory safety regulations

This passenger seat belt assembly is designed for efficient installation and long-term cost savings for Dongfeng KL operators. The pre-assembled structure (webbing + retractor + buckle + mounting hardware) allows a single technician to complete replacement in 45 minutes using only a torque wrench—no specialized safety equipment needed. The OE-compatible design ensures compliance with global safety standards (ECE R16, GB 7258), avoiding penalties for non-compliant aftermarket belts. The high-durability components extend service life to ≥500,000km, reducing replacement frequency, while the 3-year/300,000km Dongfeng warranty guarantees performance. By providing reliable crash protection, it reduces accident-related liability costs and ensures passenger safety—critical for fleet reputation and regulatory compliance