| No. | Part No. | Name |
|---|---|---|
| 1 | ZQ32514T13F6 | Hexagon Flange Nut with Serrations M14*1.5 |
| 2 | ZQ18518110TF6 | Hexagon Flange Bolt M18*1.5 |
| 3 | ZQ18518155TF6 | Hexagon Flange Bolt M18*1.5 |
| 4 | ZQ32318T13F6 | Hexagon Flange Nut M18*1.5 |
| 5 | ZQ361B14T13F6 | Type 2 Hexagonal Nut M14*1.5 |
| 6 | 712W42903-0010 | Angle Bracket |
| 7 | WG9725520367 | Locking Sleeve |
| 8 | WG9725520114 | V-thrust Rod Bolt |
| 9 | WG9925522214 | V-rod Support |
| 10 | WG9725520231 | Stud |
| 11 | WG9725520229 | Hexagon Flange Nut M18*1.5 |
| 12 | WG9725520230 | Stud |
| 13 | ZQ1840620 | Hexagon Flange Bolt M6 |
| 14 | ZQ32324T13F3 | Hexagon Flange Nut M24*2 |
| 15 | Q40312 | Spring Washer |
| 16 | Q361C12 | Type 2 Hexagonal Nut – Fine Thread |
| 17 | ZQ151C1880 | Hexagon Head Bolt M18*2 |
| 18 | ZQ151B1435TF6 | Hexagon Head Bolt M14*1.5 |
| 19 | ZQ151B1440TF6 | Hexagon Head Bolt M14*1.5 |
| 20 | ZQ1811450TF6 | Hexagon Flange Bolt with Serrations M14*1.5 |
| 21 | ZQ1811460TF6 | Hexagon Flange Bolt with Serrations M14*1.5 |
| 22 | ZQ151B1460TF6 | Hexagon Head Bolt M14*1.5 |
| 23 | ZQ1811490TF6 | Hexagon Flange Bolt with Serrations M14*1.5 |
| 24 | AZ9925528095 | Bracket |
| 25 | WG9925528040 | Front Rear Axle Air Spring Bracket Assembly |
| 26 | WG9925528030 | Air Spring Bracket Assembly |
| 27 | WG9925528010 | Air Spring Assembly |
| 28 | AZ9925528070 | Left Equalizing Beam Assembly for Rear Axle |
| 29 | AZ9925528071 | Right Equalizing Beam Assembly for Rear Axle |
| 30 | 712W41335-0001 | Rear Axle Clamping Plate |
| 31 | AZ9925520070 | U-bolt |
| 32 | AZ9925520071 | U-bolt |
| 33 | ZQ32720T13F3 | Flange Nut M20*2.5 |
| 34 | AZ9925522175 | Lower Thrust Rod Assembly |
| 35 | AZ9925522272 | V-thrust Rod Assembly |
This flange nut features serrations under the flange that act as a locking mechanism. It is used extensively in the Air Suspension in Low Position assembly to secure brackets and supports. The serrations bite into the mating surface, preventing loosening from vibration.
A heavy-duty flange bolt with a fine pitch thread, used for major structural connections in the low‑position suspension. Its flange distributes clamping load evenly, reducing stress on the component surfaces.
Matching nut for the M18 flange bolt, providing a secure fastening solution. It is used in conjunction with the bolt to clamp critical suspension arms and brackets, ensuring rigidity.
A standard Type 2 nut with fine threads, offering increased height for better thread engagement. It is commonly used on the Air Suspension in Low Position for smaller fasteners.
This L-shaped bracket provides a mounting interface between the frame and suspension components. It is precision-formed from high‑strength steel to maintain exact geometry.
A cylindrical sleeve used to prevent rotation of fasteners or to act as a spacer. It also provides a wear‑resistant surface for moving joints.
Special high‑strength bolt used to attach the V‑thrust rod to the axle and frame. It withstands high shear and tensile loads during acceleration and braking.
A cast or fabricated support that holds the V‑rod in position. It ensures proper alignment and load distribution.
A threaded rod with both ends threaded, used to attach components where a bolt cannot be used. Provides a fixed stud for nut‑only tightening.
Small flange bolt used for light‑duty attachments, such as sensor brackets or air line clamps, within the suspension system.
Large‑diameter flange nut used on the main pivot bolts of the equalizing beams. It provides high clamping force and resists loosening.
A split‑ring washer that provides spring tension to prevent fasteners from backing off under vibration. Used in conjunction with nuts and bolts.
A fine‑pitch nut with Type 2 height, offering precise torque control and resistance to vibrational loosening.
A standard hex head bolt with coarse thread (M18*2) used for heavy‑duty applications where fine thread is not required.
A common fine‑thread hex bolt used for various mounting points on the suspension brackets and supports.
A flange bolt with serrated face to provide a locking effect without a separate washer. Widely used in the Air Suspension in Low Position for its reliability.
A general‑purpose mounting bracket used to attach various auxiliary components to the suspension frame.
This assembly mounts the front air spring on the rear axle. It is a robust steel fabrication that positions the spring correctly for optimal load distribution.
The main bracket that supports the air spring on the chassis side. It is designed to withstand vertical and lateral forces while maintaining precise alignment.
The core component of the Air Suspension in Low Position – a durable rubber bellows filled with compressed air. It provides adjustable ride height and absorbs road shocks.
This beam connects the left side of the axle to the frame, allowing articulation while maintaining alignment. It works with the right beam to balance loads.
Mirror‑image of the left beam, ensuring symmetrical suspension behavior. Both beams are critical for maintaining the low‑position geometry.
A heavy plate used to clamp the axle housing to the suspension beams. It distributes clamping force evenly to prevent axle rotation.
A U‑shaped bolt that wraps around the axle and secures it to the suspension beams. It is a fundamental fastening element in the low‑position air suspension.
A large flange nut with coarse thread (M20*2.5) used on the U‑bolts to secure the axle. Its flange provides a large bearing surface.
A rod that transmits longitudinal forces between the axle and the frame. It controls axle wind‑up during acceleration and braking.
A V‑shaped rod assembly that provides lateral stability to the rear axle. It prevents sideways movement while allowing vertical articulation.
Our Air Suspension in Low Position components are manufactured to Sinotruk’s exacting standards. Every bracket, bolt, and bushing matches the original C7H design, ensuring seamless installation and reliable performance.
The low‑position geometry lowers the vehicle’s center of gravity, improving stability and reducing rollover risk. This design also enhances trailer coupling height and aerodynamics.
All components are built from high‑tensile steel and corrosion‑resistant coatings. They endure extreme loads, off‑road impacts, and harsh weather conditions.
We supply every nut, bolt, washer, and bracket needed for a full installation. No extra parts to source – simply unpack and install with confidence.
The Air Suspension in Low Position is a specialized configuration for the Sitrak C7H, designed to lower the vehicle’s ride height for specific applications like container haulage or low‑deck trailers. This system uses air springs to adjust the chassis height while maintaining load‑carrying capacity.
Unlike conventional leaf‑spring suspensions, the low‑position air suspension offers a smoother ride and better protection for fragile cargo. It also reduces loading height, making dock operations easier and safer.
The system consists of air springs (bellows), a height control valve, and a network of brackets and rods. Our kit includes all necessary fasteners – from the M6 flange bolts to the heavy‑duty U‑bolts and M24 nuts.
Installation begins with removing the old suspension and cleaning the mounting surfaces. Then, the air spring brackets are bolted to the frame using the serrated flange bolts. The equalizing beams are attached to the axle with U‑bolts and flange nuts.
Proper torque application is crucial. Use a calibrated torque wrench to tighten all fasteners to the values specified in the manual. The serrated nuts and bolts provide a self‑locking feature, but final checks are recommended.
The Air Suspension in Low Position is ideal for fleets that prioritize fuel economy. A lower ride height reduces aerodynamic drag, which can improve fuel consumption by up to 3% on highway routes. This makes it a cost‑effective choice over the long term.
Regular maintenance includes inspecting air springs for cracks, checking air line connections, and ensuring all bolts remain tight. Replace any worn bushings or washers promptly to maintain system integrity.
Our kit includes a detailed installation guide with illustrations. Even if you are not a professional mechanic, you can follow the step‑by‑step instructions to complete the swap within a day.
The V‑thrust rod assembly and lower thrust rods are pre‑assembled with premium rubber bushings. They provide precise axle alignment and reduce unwanted movements, enhancing tire life.
All brackets and supports are fabricated from high‑grade steel with a phosphate coating for corrosion resistance. The air spring brackets are reinforced with gussets to handle heavy loads without deformation.
We offer this kit as a complete set, with quantities matching the original parts list. You receive exactly what is needed – no shortages, no surplus.
The Air Suspension in Low Position also improves braking stability. With a lower center of gravity, the truck experiences less nose‑dive during hard stops, which translates to shorter stopping distances.
For fleets operating in urban areas, the low ride height makes it easier to navigate low‑clearance tunnels and parking garages. It also reduces the risk of roof damage from overheight loads.
Our technical support team is available to answer any questions regarding the installation or compatibility of the Air Suspension in Low Position. We also provide a warranty on all components against manufacturing defects.
Choosing our genuine Sitrak suspension kit ensures you get the same quality as the factory‑fitted parts. Avoid generic aftermarket alternatives that may compromise safety and performance.
We ship worldwide with fast delivery. For urgent orders, we offer expedited shipping options. Contact our sales team using the buttons above to get a quote tailored to your fleet size.
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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