Body system
This is a genuine right SMJ box cover (OE:3724421-C6100) for Dongfeng GX&KX, designed to protect SMJ electrical components from dust, moisture and impact. It fits all GX&KX models, made of high-impact ABS plastic (85 Shore D hardness, Dongfeng-certified). Fleet tests show it extends SMJ component lifespan by 50% in off-road conditions, reducing electrical repair costs. The snap-fit design aligns with factory mounting points, enabling tool-free installation for fleet technicians.
Product Attributes
| Attribute | Details |
| OE Number | 3724421-C6100 |
| Application | Dongfeng GX (4x2/6x4), KX (6x4/8x4) |
| Product Type | Right SMJ Box Cover |
| Material | High-Impact ABS Plastic |
| Hardness | 85 Shore D |
| Protection | Dustproof/Water-Resistant (IP54) |
| Installation | Tool-Free Snap-Fit (OE Mounting Points) |
| Color | Black |
| Certification | Dongfeng Commercial Vehicle, ISO 9001 |
PRODUCT DESCRIPTION
Genuine Factory Build & Premium Protective Design
This right SMJ box cover (OE:3724421-C6100) adheres to Dongfeng’s genuine part standards, crafted from 85 Shore D high-impact ABS plastic—resistant to chassis vibrations and minor impacts. It features an IP54-rated seal (dustproof, water-resistant) to shield SMJ electrical components from road debris and moisture. Unlike aftermarket covers, it matches the original SMJ box dimensions precisely, ensuring no gaps that could compromise component protection.
Perfect Compatibility & Hassle-Free Installation
It is fully compatible with Dongfeng GX (4x2 cargo, 6x4 tractor) and KX (6x4 heavy haul, 8x4 construction) models. To confirm fitment, cross-check your truck’s VIN or existing SMJ cover OE number with 3724421-C6100. Installation requires no tools: align the cover with the SMJ box’s snap tabs and press to secure (no drilling or adhesive needed). A quick-reference guide is available to streamline installation for fleet maintenance teams.
Enhance Component Durability & Reduce Downtime
As a critical body system component, this cover prevents SMJ electrical faults caused by dust/moisture—reducing repair frequency by 50% (vs. uncovered SMJ boxes) per Dongfeng fleet data. Its high-impact ABS construction withstands 10,000+ vibration cycles (simulating 100,000+ km of heavy-haul use) without cracking. It also features a warning label to alert technicians to SMJ component safety, aligning with automotive electrical safety standards.
Trusted Supplier & Reliable Support
We are a direct supplier of Dongfeng genuine parts with rich export experience. The cover is packaged in shock-absorbent materials (suitable for global sea/air freight). We offer a 12-month warranty against manufacturing defects, and our after-sales team provides 24/7 support for compatibility or installation questions. Contact us for the latest price and availability—we ship globally to meet your fleet’s body component needs.
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
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
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%.
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