Dongfeng GX Rear stabilizer bar assembly 2908010-H19C0

The stabilizer bar features a engineered curved structure calibrated to maximize torsional stiffness and anti-roll efficiency. Its cross-sectional diameter (20-26mm, depending on GX model) is selected to balance rigidity—providing sufficient torsional force to reduce body roll during cornering or uneven road driving—while retaining enough flexibility to avoid compromising ride comfort. The bar’s central section is designed with a slight upward arc to clear the GX’s rear differential and exhaust system, while the end sections are angled to align with the rear control arm end links. Additionally, the bar’s surface is precision-ground to ensure uniform thickness, preventing stress concentrations that could lead to fatigue cracking under repeated torsional loads

Stabilizer Bar Core: Constructed from high-quality cold-rolled carbon steel (SAE 1045 or 4140) with a quenched and tempered heat treatment. This process enhances the material’s tensile strength (≥ 680 MPa) and yield strength (≥ 480 MPa), making it highly resistant to torsion fatigue and deformation—even under heavy loads (e.g., full cargo transport, rough off-road conditions). The bar’s surface is treated with electrophoretic coating (15-20μm thickness) to provide superior corrosion resistance against road salt, moisture, and dust.

Bushings: Made from durable EPDM (Ethylene Propylene Diene Monomer) rubber or polyurethane. EPDM bushings offer excellent aging resistance and vibration damping, reducing noise transmitted to the vehicle interior. Polyurethane bushings (optional for heavy-duty GX variants) provide higher rigidity for improved handling, with both materials designed to withstand long-term compression (up to 50% of their original thickness) without cracking or hardening.

End Links & Brackets: Fabricated from zinc-plated carbon steel (grade Q235) for the brackets and chrome-plated steel for the end link rods. This ensures high load-bearing capacity (end links can withstand up to 5000 N of axial force) and resistance to rust, even in harsh operating environments

As a key component of the Dongfeng GX’s rear suspension, this assembly delivers three core functions:

Anti-Roll Control: During cornering or sudden lane changes, the stabilizer bar twists to transfer force between the left and right rear wheels—reducing the difference in suspension compression. This minimizes rear body roll (leaning), improving the vehicle’s stability and reducing the risk of oversteer (rear-end skidding), especially when carrying heavy cargo.

Traction Maintenance: By balancing the load distribution across the rear tires, the assembly ensures consistent tire contact with the road surface. This enhances traction during acceleration, braking, and wet/slippery conditions, preventing uneven tire wear and improving overall driving safety.

Ride Comfort Optimization: The bushings in the assembly act as a flexible buffer between the rigid stabilizer bar and chassis, absorbing small vibrations from rough roads. This balances the assembly’s anti-roll performance with a smooth ride, reducing fatigue for drivers during long-haul trips

This rear stabilizer bar assembly meets international automotive quality standards, including China’s GB/T 13304 (Carbon steel for general structural use), ISO 6431 (Testing methods for automotive suspension components), and IATF 16949 (Automotive quality management system). Each unit undergoes rigorous pre-shipment testing:

Torsion Fatigue Testing: Subjecting the bar to 1.2 million+ cycles of torsional stress (mimicking 200,000+ km of real-world driving) to ensure no cracks or deformation.

Dimensional Accuracy Testing: Using coordinate measuring machines (CMM) to verify all dimensions (length, diameter, hole spacing) within ±0.1mm tolerances.

Corrosion Resistance Testing: Exposing components to 800+ hours of salt spray testing (per ISO 9227) to confirm the coating’s ability to prevent rust.

Bushing Performance Testing: Evaluating bushing compression, wear, and elasticity after 150,000+ cycles of movement to ensure long-term functionality.

The assembly is backed by a manufacturer’s warranty (typically 18-24 months), providing customers with confidence in its reliability for Dongfeng GX’s heavy-duty operating conditions