| No. | Part No. | Name |
|---|---|---|
| 1 | WG9925688201 | Stabilizer Bar Assembly |
| 2 | WG9925688210 | Rubber Bushing |
| 3 | WG9925688220 | Rear Axle Stabilizer Left Suspension Tube Assembly |
| 4 | WG9925688221 | Rear Axle Stabilizer Right Suspension Tube Assembly |
| 5 | WG9925688224 | Bolt |
| 6 | WG9925688115 | Washer |
| 7 | ZQ361B16 | Type 2 Hexagonal Nut M16*1.5 |
| 8 | WG9925688230 | Stabilizer Bracket Assembly |
| 9 | ZQ1811450TF6 | Hexagon Flange Bolt with Serrations M14*1.5 |
| 10 | ZQ32514T13F6 | Hexagon Flange Bolt with Serrations M14*1.5 |
| 11 | WG9925688235 | Stabilizer Bracket Spacer Plate |
The Stabilizer Bar Assembly is the main torsion spring of the rear air suspension. It resists lateral chassis roll during cornering, improving tire grip and directional stability. Manufactured from high-strength spring steel, it undergoes induction hardening for durability. This assembly is the core of the Rear Air Suspension Stabilizer Bar system.
The Rubber Bushing provides a flexible mounting point between the stabilizer bar and the suspension links. It absorbs road shocks and allows controlled rotation of the bar. Made from natural rubber with a steel inner sleeve, it reduces noise and vibration while maintaining precise articulation.
This left-side tube assembly connects the stabilizer bar to the rear axle housing. It features precision-bent tubing with welded mounting brackets. The assembly transfers torsional forces from the bar to the axle, effectively controlling wheel hop and enhancing the performance of the Rear Air Suspension Stabilizer Bar.
The right-side tube assembly is a mirror-image counterpart of the left unit. It provides balanced load transfer and ensures symmetrical handling characteristics. Both tube assemblies are manufactured to identical tolerances, guaranteeing a consistent roll stiffness distribution across the rear axle.
This high-strength Bolt secures the suspension tube assemblies to the stabilizer bar ends. It features a fully threaded shank and a hexagonal head. The bolt is grade 10.9 for maximum shear strength, ensuring that the stabilizer bar remains firmly attached under extreme articulation.
This hardened flat Washer is placed under the bolt head and nut to distribute clamping pressure evenly. It prevents galling of the tube bracket surfaces and maintains preload over time. The washer is zinc-plated for corrosion resistance and is a standard component in the stabilizer hardware kit.
This heavy-duty nut pairs with the M16 bolt to lock the suspension tube assembly. Its Type 2 design offers increased thread height, improving resistance to vibrational loosening. The fine pitch allows precise torque application, essential for maintaining the structural integrity of the stabilizer connection.
The Stabilizer Bracket Assembly mounts the stabilizer bar to the vehicle frame. It is fabricated from high-strength steel with precision-bored holes for the rubber bushings. This bracket ensures correct bar alignment and provides a solid anchor point for the entire anti-roll system.
This flange bolt features serrations under the head that act as a locking mechanism. It is used to secure the stabilizer bracket to the frame rail. The serrations bite into the mating surface, preventing rotation even under severe vibration, thus ensuring a permanent clamp.
A second variant of the serrated flange bolt, identical in thread but with a slightly different head marking. It is used in secondary mounting points on the bracket. Both bolts are interchangeable and offer the same high-clamp, anti-loosening performance for the stabilizer assembly.
This spacer plate is positioned between the stabilizer bracket and the frame rail. It adjusts the bar’s vertical position to achieve optimal roll-center geometry. Made from corrosion-resistant steel, it also serves as a shim to fine-tune the preload of the rubber bushings.
Our Rear Air Suspension Stabilizer Bar is manufactured to Sinotruk’s original specifications, using the same alloy steel and heat treatment as factory parts. This ensures exact fitment and consistent roll stiffness for your Sitrak C7H.
The stabilizer bar reduces body lean by up to 30% during cornering, improving driver confidence and tire contact. This translates to safer handling and reduced uneven tire wear, especially under heavy loads.
All components, from the rubber bushings to the bracket assembly, are tested for durability exceeding 1 million cycles. The anti-corrosion coating ensures protection against salt spray and moisture, extending the stabilizer’s operational lifespan.
Every kit includes all bolts, nuts, washers, and bushings required for installation. No extra parts are needed, saving you time and ensuring a perfect assembly. The kit matches the original fastener grades and torque specs.
The Rear Air Suspension Stabilizer Bar is an essential component for heavy-duty trucks like the Sitrak C7H. It works by transferring lateral forces from one side of the suspension to the other, effectively reducing body roll during turns and lane changes. This directly improves driver comfort and cargo safety.
When the vehicle corners, the outer suspension compresses while the inner extends. The stabilizer bar twists, creating a restoring force that counters the roll moment. This action keeps the chassis level, maintaining the rear air suspension’s optimal ride height and alignment.
Regular inspection of the Rear Air Suspension Stabilizer Bar is recommended every 40,000 kilometers. Signs of wear include cracked rubber bushings, loose mounting bolts, or a clunking noise from the rear axle. Replacing worn parts with our genuine components restores original handling dynamics.
Installation of the stabilizer bar is straightforward with the provided hardware. First, attach the bracket assemblies to the frame using the serrated flange bolts. Then mount the stabilizer bar with the rubber bushings, and finally connect the left and right suspension tube assemblies. Proper torque ensures longevity.
Our Rear Air Suspension Stabilizer Bar is compatible with all Sitrak C7H axle configurations, including 4×2, 6×2, and 6×4. The bar diameter and wall thickness are optimized for the vehicle’s gross weight, providing a balance between comfort and stability. It also fits earlier C7H model years.
The rubber bushings used in our stabilizer kit are made from high-quality elastomer with a steel inner sleeve. They are designed to absorb road impacts while allowing the bar to rotate freely. The bushings are pre-lubricated to reduce squeaking and extend their service interval.
Fleet operators will appreciate the reduced maintenance costs associated with our stabilizer bar. The durable construction and corrosion-resistant finish mean fewer replacements over the vehicle’s lifetime. We also offer bulk packaging for large orders, ensuring quick turnaround.
The stabilizer bar also enhances tire life by minimizing lateral scrub. When the axle remains parallel to the ground, tires wear evenly across the tread. This not only saves money but also improves fuel efficiency due to lower rolling resistance.
Safety is paramount, and a properly functioning Rear Air Suspension Stabilizer Bar reduces the risk of rollover accidents. It keeps the truck’s center of gravity within safe limits during emergency maneuvers. Our product meets all FMVSS and ECE regulatory standards for anti-roll devices.
We continuously improve our stabilizer bar design based on field data. Recent updates include enhanced end-link geometry and a new zinc-nickel coating that doubles corrosion protection. These innovations ensure that our product outperforms generic alternatives in real-world conditions.
The Rear Air Suspension Stabilizer Bar also contributes to a smoother ride by reducing chassis flex. It works in harmony with the air springs and shock absorbers to provide a unified suspension response. This synergy is what makes the Sitrak C7H a preferred choice for long-haul transport.
For drivers, the stabilizer bar means less steering correction needed on highways. The truck tracks straight with minimal input, reducing fatigue on long trips. This comfort factor is often overlooked but is highly valued by professional drivers.
All hardware, including the serrated flange bolts and Type 2 hexagonal nuts, are supplied with a torque specification guide. Following these values ensures that the stabilizer bar remains securely fastened without over-stressing the components.
We back our Rear Air Suspension Stabilizer Bar with a comprehensive warranty covering manufacturing defects. Our technical support team is ready to assist with any installation queries, ensuring you get the most out of your purchase.
Choosing our stabilizer bar means choosing reliability. Every unit is factory-tested for torsional strength and dimensional accuracy. We guarantee that each component matches the original Sitrak drawings, ensuring a perfect fit every time.
We also offer expedited shipping options for urgent repairs. Our logistics network covers all major regions, so you can receive the stabilizer bar kit within days. Contact our sales team via the buttons above to place your order.
Our online catalog provides comprehensive access to genuine SINOTRUK parts for all major vehicle lines — including HOWO, Sitrak, Steyr, and Yellow River series trucks. You can browse detailed specifications, original part numbers, and exploded-view diagrams for every assembly. Whether you are performing routine maintenance or planning a major overhaul, the catalog helps you quickly identify the correct components for your vehicle. When you become a SINOTRUK customer, we offer complimentary full‑access catalog services, ensuring you always have the latest product data and interchangeability information at your fingertips to support efficient fleet management and accurate parts ordering.
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