| No. | Part No. | Name |
|---|---|---|
| 1 | WG9000360571 | Air Dryer (1.0MPa with control port) (Silver tank) |
| 2 | WG9000360523 | Four‑circuit Protection Valve |
| 3 | WG9000361040 | Elastic Element NG8 |
| 4 | WG9000361050 | Circlip NG8 |
| 5 | WG9000361060 | Nut Base NG8 |
| 6 | WG9000361070 | Elastic Element NG12 |
| 7 | WG9000361080 | Elastic Element NG12 |
| 8 | WG9000361090 | Circlip NG12 |
| 9 | WG9000361100 | Circlip NG12 |
| 10 | WG9000361110 | Nut Base NG12 |
| 11 | WG9000361120 | Nut Base NG12 |
| 12 | WG90003170004 | High‑temperature Resistant Hose (Φ6*1) |
| 13 | WG9100361060 | High‑temperature Resistant C‑type Straight Quick‑connect Fitting (φ6/M10X1) |
| 14 | WG9000361209 | Right‑angle Connector Body NG8/NW4 |
The Air Dryer is a critical component that removes moisture and contaminants from the compressed air system, protecting downstream valves and actuators from corrosion and freezing. This unit is rated at 1.0MPa, features a dedicated control port for regeneration, and comes in a durable silver tank. As part of the Air Dryer and Four-Circuit Assembly, it ensures that only clean, dry air reaches the braking and suspension circuits.
The Four‑circuit Protection Valve is a safety device that divides the compressed air supply into four independent circuits. In the event of a pressure drop or leak in one circuit, the valve isolates that circuit to maintain pressure in the others, ensuring that essential systems like brakes remain operational. This valve is a cornerstone of the Air Dryer and Four-Circuit Assembly, enhancing vehicle safety.
The Elastic Element NG8 is a rubber damping component used to absorb vibration and compensate for slight misalignments in pneumatic connections. Its flexible design reduces stress on fittings and prolongs the life of the Air Dryer and Four-Circuit Assembly by preventing metal‑to‑metal contact.
The Circlip NG8 is a snap‑ring that secures components such as the elastic element or retaining rings within a bore. It ensures that internal parts remain correctly positioned, contributing to the overall integrity of the Air Dryer and Four-Circuit Assembly.
The Nut Base NG8 is a threaded insert that provides a robust mounting point for pneumatic fittings. Its precise threading ensures a leak‑free seal, making it an essential part of the Air Dryer and Four-Circuit Assembly for reliable air distribution.
The Elastic Element NG12 is a larger damping component used in heavier connections. Like its NG8 counterpart, it isolates vibration and compensates for thermal expansion, maintaining the longevity of the Air Dryer and Four-Circuit Assembly.
The Circlip NG12 is a larger snap‑ring that retains components in NG12‑sized bores. It ensures that the elastic elements and other parts stay in place, contributing to the stability of the Air Dryer and Four-Circuit Assembly.
The Nut Base NG12 is a larger threaded insert that accommodates bigger pneumatic fittings, providing a secure and leak‑proof connection point within the Air Dryer and Four-Circuit Assembly.
This high‑temperature resistant hose is designed for use in engine bay and under‑chassis applications where temperatures can exceed 120°C. Its Φ6*1 dimensions make it compatible with standard metric fittings, and its reinforced construction ensures durability in the Air Dryer and Four-Circuit Assembly.
This quick‑connect fitting allows for rapid, tool‑less connection of air lines. Its C‑type design ensures a secure grip, and its materials are chosen for high‑temperature resistance, making it a key component of the Air Dryer and Four-Circuit Assembly for easy maintenance.
The Right‑angle Connector Body NG8/NW4 is a 90‑degree fitting that changes the direction of air flow, allowing for compact routing in tight spaces. Its dual‑sized ports (NG8 and NW4) provide flexibility in connecting different tube diameters within the Air Dryer and Four-Circuit Assembly.
Every component in this Air Dryer and Four-Circuit Assembly is manufactured to Sinotruk’s original specifications, ensuring perfect compatibility and reliable performance. The air dryer and valve are calibrated for the C7H’s pneumatic system, delivering consistent drying and circuit protection.
The four‑circuit protection valve ensures that a leak in one circuit does not compromise the entire air system. Combined with the air dryer’s moisture removal, this Air Dryer and Four-Circuit Assembly significantly reduces the risk of brake failure and pneumatic component corrosion.
We supply all necessary elastic elements, circlips, nut bases, hoses, and fittings for a full replacement. The included high‑temperature components and quick‑connect fittings make the Air Dryer and Four-Circuit Assembly easy to install and maintain.
All components are built to withstand extreme temperatures, vibration, and corrosion. The silver‑tank air dryer and high‑temperature hoses are engineered for long‑term reliability, making this Air Dryer and Four-Circuit Assembly a lasting investment.
The Air Dryer and Four-Circuit Assembly is the heart of the C7H’s pneumatic system, responsible for delivering clean, dry, and regulated air to all braking, suspension, and auxiliary circuits. Without proper moisture removal, valves and cylinders can corrode, leading to costly repairs and safety risks.
The air dryer uses a desiccant cartridge to absorb water vapour from the compressed air, and the integrated control port allows for regeneration of the desiccant during the compressor’s unload cycle. This ensures that the Air Dryer and Four-Circuit Assembly maintains optimal drying efficiency throughout its service life.
The four‑circuit protection valve is a mechanical device that contains four separate spring‑loaded pistons, each protecting a different circuit. In the event of a pressure drop, the affected circuit is isolated, and a warning signal is sent to the driver, allowing for safe continued operation of the remaining circuits.
The elastic elements and circlips play a crucial role in absorbing shock and maintaining the position of internal components. The NG8 and NG12 sizes correspond to different tube diameters, ensuring compatibility with various pneumatic lines in the Air Dryer and Four-Circuit Assembly.
The high‑temperature hose is essential for routing air from the compressor to the dryer, as this area experiences significant heat. The hose’s Φ6*1 dimensions are standard, and its reinforced structure resists pressure pulses. The quick‑connect fitting allows for rapid servicing without specialised tools, a feature that is highly valued in the Air Dryer and Four-Circuit Assembly.
The right‑angle connector body NG8/NW4 provides a 90‑degree turn, enabling neat routing of air lines around chassis components. Its dual ports accommodate both NG8 and NW4 tube sizes, adding versatility to the Air Dryer and Four-Circuit Assembly.
Replacing an old or failed air dryer and protection valve with our genuine kit restores the full performance of the pneumatic system. Common signs of a failing air dryer include excessive moisture in the air tanks, frequent compressor cycling, and valve sticking. The Air Dryer and Four-Circuit Assembly kit provides a complete solution to these issues.
Installation is straightforward with the provided components. The air dryer bolts directly to the existing bracket, and the protection valve connects to the standard ports. The elastic elements and nut bases are pre‑assembled for quick attachment, and the hoses are cut to length with the included fittings.
For fleet operators, standardising on this Air Dryer and Four-Circuit Assembly ensures consistent pneumatic performance across all vehicles, simplifying maintenance and reducing downtime. The high‑quality materials and exact fitment guarantee a long service life.
The silver tank air dryer is corrosion‑resistant and has a large desiccant capacity, making it suitable for high‑demand applications. The control port allows for connection to the ECU for diagnostic monitoring, adding a layer of intelligence to the Air Dryer and Four-Circuit Assembly.
We recommend changing the air dryer cartridge every 100,000 km or annually, whichever comes first. Our kit includes all components needed for a complete overhaul, eliminating the need for separate purchases.
The four‑circuit protection valve is adjustable, allowing the cut‑in and cut‑out pressures to be fine‑tuned for specific operating conditions. This flexibility makes the Air Dryer and Four-Circuit Assembly adaptable to different trailer types and loads.
The quick‑connect fitting is a push‑to‑connect type that provides a secure, leak‑free seal. Its C‑type locking mechanism ensures that the hose cannot be accidentally disconnected, a critical feature for the Air Dryer and Four-Circuit Assembly.
We supply all components with the correct thread sealant pre‑applied on critical connections, saving time and ensuring a leak‑proof installation. The Air Dryer and Four-Circuit Assembly kit is designed for both professional workshops and experienced DIY mechanics.
We back our Air Dryer and Four-Circuit Assembly with a 12‑month warranty. Our technical support team is available to assist with any installation or compatibility questions.
We ship worldwide with tracking. Expedited shipping is available. Use the Send Email or Get Quotation buttons to request a customised quote for your fleet.
Choosing genuine Air Dryer and Four-Circuit Assembly components ensures that your C7H retains its original braking performance and reliability. Aftermarket units may not have the correct pressure settings or thread sizes, leading to improper sealing and potential failures.
The elastic elements are made from oil‑resistant rubber that remains flexible over a wide temperature range, ensuring they continue to dampen vibration effectively throughout the life of the Air Dryer and Four-Circuit Assembly.
The high‑temperature hose is rated for continuous use at 150°C, with burst pressure exceeding 50 bar. This makes it suitable for the most demanding under‑hood conditions, adding to the overall robustness of the Air Dryer and Four-Circuit Assembly.
We maintain a large stock to ensure fast dispatch, even for bulk orders. Contact our sales team for volume pricing and customised logistics solutions.
Thank you for considering our Air Dryer and Four-Circuit Assembly for your Sitrak C7H. We are confident that our genuine OEM product will deliver the reliability and performance you expect from Sinotruk.
The Air Dryer and Four-Circuit Assembly is an investment in the longevity of your braking system. By keeping the air clean and circuits protected, you reduce maintenance costs and improve safety.
We provide a comprehensive installation guide with torque specifications and routing diagrams. The kit is designed for easy replacement, with all components clearly labelled for identification.
We are committed to helping you maintain your C7H in peak condition. Our technical helpline is staffed by engineers with deep knowledge of the pneumatic system.
With proper installation and regular maintenance, this Air Dryer and Four-Circuit Assembly will provide years of dependable service, keeping your brakes responsive and your operations productive.
Upgrade your C7H with the genuine Air Dryer and Four-Circuit Assembly – the smart choice for reliability, safety, and long‑term value.
We are proud to be a trusted supplier of OEM Sinotruk parts. Contact us today to order your Air Dryer and Four-Circuit Assembly and experience the quality that only genuine components can deliver.
Don’t wait until a pneumatic failure compromises your brakes. Replace your aging air dryer and protection valve with our genuine kit and enjoy the peace of mind that comes with a fully tested, factory‑fresh system.
We are here to support your fleet’s needs with fast shipping and competitive pricing. Use the buttons above to request a quote or place your order.
The Air Dryer and Four-Circuit Assembly is an investment in the reliability of your braking system. Choose genuine Sinotruk parts for the best results.
We are confident that our genuine Air Dryer and Four-Circuit Assembly will exceed your expectations. Order today and keep your C7H running safely and efficiently.
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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