Dongfeng GX front cover Limit pin 5301623-C6100 for sale

To endure the harsh exterior conditions (rain, road salt, humidity, and UV radiation) that commercial vehicles face, the 5301623-C6100 limit pin undergoes a multi-layer anti-corrosion treatment. The base material is first coated with a zinc-nickel alloy layer (8-10μm thick) that provides superior rust resistance compared to traditional zinc plating, followed by a clear passivation layer (1-2μm thick) to enhance coating adhesion. The final layer is a black electrophoretic paint (15-20μm thick) that matches the Dongfeng GX’s front cover hardware aesthetics and further improves corrosion resistance. The pin passes 1200-hour neutral salt spray tests without red rust or coating peeling, maintaining structural integrity and functionality for over 8 years—even in coastal or high-salt regions—reducing replacement frequency and maintenance costs

The 5301623-C6100 limit pin is designed with exceptional limiting accuracy to ensure the front cover opens to a fixed, safe angle (calibrated to 65° for Dongfeng GX models) every time. It features a precision-machined cylindrical body with a dimensional tolerance of ±0.05mm, ensuring a tight fit with the front cover’s limit bracket and preventing excessive play or wobble. The pin’s top end is equipped with a wear-resistant polyurethane buffer pad (shore hardness 60±5A) that absorbs impact during front cover closure, reducing noise (to ≤45dB) and preventing metal-to-metal contact wear. Additionally, the pin’s surface is polished to a smooth finish (Ra ≤ 0.8μm) to minimize friction with the limit bracket, ensuring smooth movement during front cover opening and closing—even after 10,000+ cycles of use—without jamming or seizing

Exclusively tailored for Dongfeng GX commercial vehicles (including heavy-duty trucks and light cargo models), this front cover limit pin strictly adheres to the original equipment (OE) specifications of part number 5301623-C6100. It is manufactured using CNC turning and grinding technology, ensuring seamless alignment with the Dongfeng GX’s front cover limit bracket, hinge assembly, and mounting holes. The pin has a total length of 60mm (including a 15mm threaded section with M10×1.25 thread specifications) that matches the front cover’s mounting depth, allowing direct installation without drilling, trimming, or modifying the vehicle’s body structure. It is fully compatible with all Dongfeng GX models produced since 2021, making it a reliable replacement part for factory assembly or after-sales repairs—eliminating compatibility issues common with generic limit pins

The 5301623-C6100 limit pin is designed for user-friendly installation and minimal maintenance. It comes with a pre-installed lock nut (grade 8.8) and a flat washer, eliminating the need for separate hardware sourcing. The threaded section of the pin allows for tool-free hand tightening (with a final torque of 25 N·m using a wrench for secure fixing), and the compact design (weight only 55g) makes handling easy—installation can be completed in 5-8 minutes by a single technician, 50% faster than non-OE alternatives. For maintenance, the anti-corrosion coating and wear-resistant buffer pad require no periodic replacement, and the pin only needs visual inspection during regular vehicle servicing to check for loose nuts or buffer pad damage. It also includes a 24-month warranty against material defects (e.g., bending, coating peeling) and manufacturing errors, providing confidence for Dongfeng GX owners and repair facilities