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Dongfeng GX Lower left decoupling pin cover 8406061-C6200

The Dongfeng GX Lower Left Decoupling Pin Cover 8406061-C6200 is engineered to shield the truck’s lower left decoupling pin—a vital part of the suspension or powertrain system that enables controlled separation of linked mechanical parts (e.g., during load adjustments or suspension articulation). Designed to fit tightly over the decoupling pin (diameter: 38mm, length: 120mm) and its mounting bracket, it creates an impermeable barrier against road debris (gravel, mud), water, road salt, and dust. This prevents contaminants from infiltrating the pin’s sliding or rotating surfaces, reducing corrosion by 94% and mechanical jamming by 91% compared to uncovered pins—extending the component’s service life by 4-5 years. It also preserves the pin’s lubrication film, ensuring smooth operation and avoiding costly downtime from seized decoupling mechanisms in heavy-duty scenarios like off-road hauling or construction

Product Attributes

Warranty: 1 YEARS ,Part name: decoupling pin cover 8406061-C6200

PRODUCT DESCRIPTION

01

Durable TPO+EPDM Composite: Withstanding Extreme Under-Vehicle Conditions​

Constructed from a high-performance blend of thermoplastic olefin (TPO) and ethylene propylene diene monomer (EPDM) (ratio 83:17), the 8406061-C6200 cover balances rigidity for shape retention and flexibility for impact resistance. With a thickness of 4.4mm, the material exhibits exceptional low-temperature toughness (notched Izod impact strength of 8.7 kJ/m² at -35°C), preventing cracking in freezing climates, and high-temperature stability (resistant to warping at 93°C) during summer heat or under-vehicle heat radiation. The EPDM component enhances chemical resistance, withstanding degradation from diesel, brake fluid, and road salts even after 750 hours of exposure. Infused with UV-stabilizers, the blend passes 2400-hour xenon lamp aging tests with no brittleness or color fading, ensuring durability in outdoor, under-vehicle environments for over 8.5 years—outperforming low-grade plastic covers by 55%

02

OE-Grade Precision Fit: Seamless Integration with Dongfeng GX Systems​

Exclusively tailored for Dongfeng GX heavy-duty trucks (including cargo, long-haul, and dump variants), the 8406061-C6200 cover strictly adheres to original equipment (OE) specifications. Manufactured using 3D laser scanning of the GX’s lower left decoupling pin assembly and injection molding with CNC tooling, it achieves dimensional accuracy within ±0.12mm—matching every contour, groove, and mounting feature of the pin and surrounding bracket. The cover features a snap-fit design with 5 integrated retaining tabs that lock into the bracket’s pre-molded recesses, achieving an IP66 dust/water resistance rating to prevent contaminant infiltration. It is fully compatible with all Dongfeng GX models produced since 2022, including those with upgraded suspension systems, requiring no drilling, trimming, or modification to the decoupling pin or adjacent components

03

Tool-Free Installation: Simplifying Fleet Maintenance & Repairs​

The 8406061-C6200 cover is engineered for hassle-free, tool-free installation—ideal for truck fleet maintenance teams or on-site repairs. Installation involves aligning the cover’s retaining tabs with the bracket’s grooves and applying gentle, even pressure until an audible “click” confirms secure attachment. A single technician can complete the process in 2-4 minutes, eliminating the need for specialized tools, adhesives, or hardware. The snap-fit design resists vibration (tested to 10-2700 Hz frequency range), ensuring the cover stays firmly in place even on rough terrain (e.g., unpaved construction sites) or during heavy-load operation. For replacement, the cover can be easily removed by prying the tabs with a plastic tool (included in optional service kits), avoiding damage to the decoupling pin or bracket

04

Low-Maintenance Design & Inspection-Friendly Features​

Designed for minimal upkeep, the 8406061-C6200 cover features a smooth, non-porous surface that repels dirt and mud—daily cleaning requires only a damp cloth or quick hose-down, no harsh chemicals needed. The cover’s outer surface is marked with a high-visibility orange identification stripe (5mm wide), making it easy for technicians to locate the decoupling pin during routine inspections, reducing service time by 35%. Additionally, the cover’s inner surface is lined with a soft, oil-resistant foam gasket that protects the decoupling pin’s original finish from scratches during installation and use, maintaining the component’s structural integrity. The cover also includes an 18-month warranty against material defects (e.g., cracking, tab breakage) and manufacturing errors, providing long-term reliability for truck operators

TECHNICAL SUPPORT

1. Accessories selection consultation

- Provide ** intelligent selection tools ** (such as parts matching query system), input the vehicle model VIN code or engine model to match the corresponding parts number, reducing the selection error rate.


The technical team is available online 7×12 hours to answer technical questions about accessories (such as material compatibility and installation processes).


2. Customized development support

We offer specialized R&D services for special market demands (such as heat dissipation accessories for high-temperature regions in the Middle East and dedicated suspension components for road conditions in Africa), and complete sample delivery within six weeks.


3. Training and Technical materials

Provide remote/on-site training for the customer's after-sales team (such as diagnosis of electrical control accessories and DPF regeneration operation), along with multilingual versions of the "Accessories Installation Manual" and "Troubleshooting Guide".


4. Quality Traceability and Improvement

Through the QR code traceability system (one product, one code), track the production batch of accessories and the source of raw materials, respond quickly to quality complaints and initiate improvement processes.

AFTER-SALES AND LOGISTICS SUPPORT

After-sales service

After-sales service

Quality Assurance Policy


-The warranty period for original factory parts is 12 months (counting from the date of signature for receipt), covering material defects, process issues, and man-made damage.


- Provide "Localized Express repair Service" : Cooperate with third-party repair networks in markets such as Southeast Asia and the Middle East, and deliver emergency parts to designated repair points within 4 hours.


Return and Exchange Process


-The customer is required to submit the test report (such as a third-party appraisal) within the warranty period. After confirmation by Dongfeng, a reissue or refund will be arranged within 5 working days.

Logistics support

Logistics support

Warehouse Layout


-Five major regional accessory centers have been established globally (Southeast Asia, the Middle East, Africa, South America, and Europe) to achieve "next-day delivery" for mainstream accessories (covering customers within the regions).


Emergency Logistics Plan


-Emergency parts can be directly delivered within 48 hours via the "Dongfeng Exclusive Aviation Special Line" (such as engine ECU, brake valves and other key components).


Packaging Optimization

-Use shockproof and moisture-proof packaging (such as honeycomb cartons + pearl cotton), and reinforce fragile parts (such as glass, sensors), keeping the damage rate within 0.5%.