Dongfeng GX truck parts Right guide arm assembly 2932010-H03A1

Built as the key component controlling rear axle lateral and longitudinal movement, this guide arm features exceptional structural rigidity. The main body is fabricated from Q690 high-strength steel via precision stamping, with a 10mm-thick base and 8mm-thick triangular reinforcing ribs—enhancing anti-bending strength by 50% compared to Q550 steel alternatives. It achieves a static load capacity of 8000N, effectively limiting rear axle lateral deflection to ≤2mm under full load (40 tons) and preventing tire uneven wear. The stamping process optimizes material grain flow, ensuring the arm withstands 500,000km of road vibration without structural deformation, maintaining consistent suspension geometry

The assembly integrates high-performance rubber-metal bushings that are critical to its durability and performance. The bushings feature a 3-layer structure: inner steel sleeve (45# steel, precision ground), middle natural rubber (Shore A 75 hardness, high elasticity), and outer steel sleeve (galvanized steel, anti-corrosion). This design absorbs 70% of suspension vibration (10-500Hz) and allows 15° of angular deflection to accommodate axle movement. The rubber undergoes aging resistance treatment, maintaining elasticity in temperatures from -40℃ to 100℃ and passing 3000-hour ozone aging testing (ASTM D1149) without cracking. The bushings have a service life of ≥300,000km, twice that of generic rubber bushings

Engineered to resist corrosion and impact in harsh under-vehicle environments, the 2932010-H03A1 assembly adopts a comprehensive protective system. The guide arm surface undergoes shot blasting (Sa 2.5 grade) to remove impurities, followed by a 40μm cathodic electrophoretic primer and 50μm polyester powder coating. This dual-layer coating achieves 2500-hour neutral salt spray resistance (ASTM B117) with no red rust, adapting to coastal humidity, road salt, and muddy construction sites. The arm’s edges are rounded (R5mm) to prevent stress concentration and resist impact from gravel (up to 60km/h) without denting. Welding joints are sealed with anti-corrosion mastic to prevent moisture ingress

This right guide arm assembly is designed for efficient installation and long-term cost savings for Dongfeng GX operators. The pre-assembled structure (guide arm + bushings + mounting bolts + lock nuts) allows a two-person team to complete replacement in 60 minutes using only a torque wrench (target torque: 350±20N·m)—no bushing pressing or specialized tools required. The OE-compatible design eliminates alignment issues common with aftermarket arms, which often cause suspension noise and tire wear (repair costs up to $1,500). The high-strength steel and durable bushings extend the assembly’s service life to ≥800,000km, reducing replacement frequency. Backed by a 3-year/500,000km Dongfeng warranty, it ensures stable suspension performance and predictable maintenance expenses for fleets