Dongfeng KL trcuk parts Lower side spoiler right bracket 8407158-C3301

Designed to work in tandem with the lower side spoiler, the bracket ensures the spoiler maintains its optimal position (12° downward angle, as specified by Dongfeng KL’s aerodynamic engineering) to redirect airflow along the truck’s side. By keeping the spoiler stable at highway speeds (60–100km/h), the bracket helps reduce aerodynamic drag by 8–10% and minimizes wind turbulence around the rear wheels—lowering fuel consumption by 2–3% for long-haul trips. The bracket’s streamlined shape (no sharp edges) also prevents airflow separation, avoiding additional drag that would negate the spoiler’s benefits. Unlike poorly fitted brackets that cause the spoiler to shift or vibrate, this design preserves the spoiler’s aerodynamic function, ensuring consistent fuel efficiency and reduced wind noise in the cab

Built to secure the lower side spoiler (which endures wind loads of up to 400N at high speeds) and resist road impacts, the bracket uses high-grade structural steel. The main body is crafted from 4.5mm-thick Q345B low-alloy steel (tensile strength 470–630 MPa), capable of withstanding static loads of 800N (2x the maximum expected wind load) without bending. The spoiler-mounting lugs are reinforced with 6mm-thick steel plates, welded via robotic MIG welding (fillet weld size 5mm) to ensure joint integrity—preventing lug separation during vibration or minor impacts (e.g., hitting curbs). Unlike thin mild steel or aluminum brackets that deform under stress, this heavy-duty design ensures the spoiler remains securely fastened even during off-road driving or heavy hauling, with a service life of 6+ years

Engineered to resist corrosion from road salt, rain, mud, and UV radiation (critical for underbody-mounted components), the bracket features a comprehensive three-stage anti-corrosion treatment. First, it undergoes hot-dip galvanization (zinc coating thickness ≥80μm) to create a base rust barrier. Next, an electrostatic epoxy primer (55μm thickness) is applied for enhanced coating adhesion, followed by a black polyester topcoat (65μm thickness) that matches the cab underbody’s color. This coating system passes 900 hours of neutral salt spray testing (equivalent to 7 years of road salt exposure) without rust, peeling, or fading. The mounting holes are coated with anti-seize compound to prevent thread corrosion, ensuring easy disassembly during maintenance. Unlike single-layer painted brackets that rust within 1–2 years, this design maintains structural integrity in harsh underbody environments

Designed for hassle-free replacement by fleet technicians or DIY owners, the bracket includes precision-machined features to simplify setup. All 5 mounting holes (3 for chassis attachment, 2 for spoiler connection) are drilled with H9 tolerance (ensuring perfect bolt fit) and deburred to avoid damaging fasteners. Two laser-etched alignment marks align with reference points on the cab underbody and spoiler, eliminating guesswork and reducing installation time by 25%. Unlike brackets with misaligned holes that require reaming, this design allows direct attachment using standard hand tools (socket wrench, torque wrench) to OEM-specified torque: 38 N·m for chassis bolts, 22 N·m for spoiler bolts. Installation takes 20–25 minutes, even for first-time users. Each unit undergoes dimensional verification via CMM, load-bearing testing, and corrosion resistance checks, backed by a 24-month warranty against defects (e.g., bending, rusting, hole misalignment)