Original Dongfeng GX left decoupling pin cover 8406039-C6100

Constructed from Dongfeng’s proprietary blend of thermoplastic olefin (TPO) and ethylene propylene diene monomer (EPDM) (ratio 82:18)—the same material used in factory production—the 8406039-C6100 cover balances rigidity and flexibility. With a thickness of 4.3mm, it exhibits exceptional low-temperature toughness (notched Izod impact strength of 8.5 kJ/m² at -35°C), preventing cracking in freezing climates, and high-temperature stability (resistant to warping at 92°C) during summer heat. The EPDM component, tested to Dongfeng’s OE standards, withstands degradation from diesel, brake fluid, and road salts for 700+ hours. Infused with OEM-grade UV-stabilizers, it passes 2300-hour xenon lamp aging tests with no brittleness or color fading, ensuring durability in outdoor environments for over 8.5 years—matching the truck’s original component lifespan

Manufactured using Dongfeng’s original 3D CAD data and CNC injection molding—same as factory production—the 8406039-C6100 cover achieves dimensional accuracy within ±0.08mm, exceeding aftermarket tolerances. It perfectly matches every contour, groove, and mounting feature of the GX’s left decoupling pin and bracket, eliminating gaps that could allow contaminant infiltration. The cover features 5 OE-designed snap-fit retaining tabs that lock into the bracket’s pre-molded recesses, achieving an IP66 dust/water resistance rating (consistent with factory seals). It is fully compatible with all Dongfeng GX models produced since 2021 (including standard and mid-tier suspension variants) and requires no modifications—ensuring it integrates seamlessly with the truck’s existing mechanical systems without disrupting performance

Designed for hassle-free, tool-free installation—mirroring the factory assembly process—the 8406039-C6100 cover can be installed by a single technician in 2-4 minutes. Alignment is guided by OE-molded reference marks, and secure attachment is confirmed by an audible “click” from the snap-fit tabs—no specialized tools, adhesives, or drilling required. This installation method preserves the truck’s original mounting points, maintaining warranty validity (critical for fleet operators relying on Dongfeng’s factory coverage). The snap-fit design, tested to Dongfeng’s vibration standards (10-2600 Hz frequency range), ensures the cover stays firmly in place even on rough terrain, avoiding rattling or displacement that could damage the decoupling pin

Designed for minimal upkeep, the 8406039-C6100 cover features a smooth, non-porous OE surface that repels dirt and mud—cleaning requires only a damp cloth, no harsh chemicals. It includes Dongfeng’s original high-visibility yellow identification stripe (4mm wide) and laser-etched OE part number, making it easy for technicians to locate the decoupling pin and verify authenticity during routine inspections, reducing service time by 35%. The cover’s inner surface is lined with OE-spec oil-resistant felt (same as factory) that protects the decoupling pin’s original finish from scratches, maintaining the component’s structural integrity. Backed by Dongfeng’s 18-month OE warranty, it guarantees replacement for material defects (e.g., cracking, tab breakage), providing long-term reliability for operators prioritizing original quality