Dongfeng GX truck parts Left door frame outer sealing strip bracket 6107063-C6101

Built to hold the left door frame’s outer sealing strip firmly in place (even under repeated door opening/closing and road vibration), this bracket features a reinforced structure. The main body is crafted from 2mm-thick high-strength steel (Q235 grade) with integrated reinforcing ribs along the length of the bracket, enhancing torsional rigidity and preventing bending or warping. Critical areas—such as the bracket’s ends (where sealing strips often pull away) and mounting lugs—are further reinforced with 3mm-thick steel plates, ensuring long-term stability. Unlike flimsy plastic brackets that crack under stress, this steel design can withstand 50,000+ door cycles (equivalent to 5+ years of heavy use) without losing shape. It also maintains consistent pressure on the sealing strip, ensuring the strip stays pressed against the door panel for reliable sealing

Exposed to road salt, rain, mud, and humidity (common in truck operation), the bracket requires robust corrosion resistance. It undergoes a three-step surface treatment process: first, a zinc phosphate coating to create a corrosion-resistant base; second, an electrophoretic primer (E-coat) that seals all crevices (including the sealing strip groove) for uniform protection; third, a black powder coating (180μm thickness) that resists chipping, scratching, and chemical damage from de-icing agents. This system enables the bracket to pass 600 hours of neutral salt spray testing without rust or coating peeling—far exceeding the industry standard of 400 hours for truck door components. The coating also remains stable in extreme temperatures (-40°C to 120°C), ensuring the bracket maintains structural integrity and appearance for over 8 years

Beyond supporting the sealing strip, this bracket actively enhances the truck’s sealing performance. Its precision-machined sealing strip groove features a slight inward taper, which compresses the sealing strip gently when the door is closed—improving the strip’s contact with the door panel and reducing wind noise by up to 10dB at highway speeds. The bracket also includes a rubber cushion between the steel body and door frame, which absorbs road vibration and prevents metal-on-metal contact noise. This cushion minimizes the transfer of vibration to the sealing strip, avoiding premature wear on the strip’s rubber and ensuring consistent sealing over time. Additionally, the bracket’s design creates a barrier against debris (e.g., sand, small stones) entering the sealing strip groove, preventing the strip from becoming dislodged or damaged

Engineered for efficient maintenance in truck repair shops, this bracket simplifies installation with user-friendly features. It comes with pre-assembled mounting hardware (stainless steel self-tapping screws and lock washers) that match Dongfeng GX’s OEM specifications—no need for separate parts procurement. The bracket has laser-etched alignment marks that align with reference points on the door frame, guiding technicians to position it accurately in 15–20 minutes using standard hand tools (no specialized equipment required). To guarantee quality, the product is manufactured in an IATF 16949 certified facility, with each unit undergoing strict inspections: dimensional checks (via 3D coordinate measuring machines) to verify fitment, load tests to confirm support strength, and coating adhesion tests. It also includes a 36-month warranty against manufacturing defects (e.g., material cracking, coating peeling, or mounting lug failure), providing Dongfeng GX truck owners and fleet operators with long-term peace of mind