

The part is a high‑efficiency pneumatic system component designed for the Sitrak C7H heavy truck, delivering reliable compressed air for braking, suspension, and auxiliary functions. This Single-cylinder air compressor kit includes the compressor unit, connecting hoses, mounting brackets, fasteners, and tube clamps – all engineered for a complete and durable installation.
The part is built to withstand the harsh operating conditions of heavy‑duty transport, providing consistent air pressure and flow. Its compact design allows for easy integration into the vehicle’s existing pneumatic system, ensuring reliable performance over millions of kilometres. The included components – from the braided rubber hose to the spiral tube assembly – are selected for their durability and compatibility with The part.
For detailed fitment and compatibility information, please refer to the Sinotruk Catalog. This genuine Single-cylinder air compressor solution ensures perfect integration with your Sitrak C7H, providing dependable air supply for all pneumatic systems.
The Rubber hose with braided layer is a flexible, high‑pressure air line that connects The part to the vehicle’s air system. Its braided reinforcement provides excellent burst strength and resistance to abrasion, ensuring long‑term reliability.
This hose is designed to withstand temperature extremes and vibration, making it an ideal component for The part. Its smooth inner bore minimizes pressure drop, ensuring efficient air delivery.
The Tube 16 assembly is a pre‑formed rigid tube that routes air from The part to the main reservoir. It features precision‑bent sections for a perfect fit within the chassis, reducing installation time.
This assembly is manufactured from corrosion‑resistant steel and includes the necessary end fittings for a secure, leak‑free connection. It is a key component of The part system, ensuring reliable air transfer.
The Hex flange bolt M6 is a high‑strength fastener used to secure the brackets and clamps of The part. Its integral flange distributes clamping load evenly, preventing damage to the mounting surfaces.
Made from corrosion‑resistant steel, this bolt ensures a reliable and long‑lasting connection, essential for the vibration‑prone environment of The part.
The Hex flange face bolt with teeth features serrations under the head that bite into the mating surface, providing a positive locking action. This fastener is used in critical mounting points of The part to prevent loosening under severe vibration.
Its robust construction and anti‑loosening design make it an ideal choice for securing The part to the chassis, ensuring long‑term stability.
The Angle bracket is a sturdy L‑shaped support that provides a rigid mounting platform for The part and its associated tubing. It is fabricated from high‑strength steel with a corrosion‑resistant coating.
This bracket ensures correct alignment of The part, minimising stress on the hoses and connections, and contributing to the overall durability of the system.
The Single tube clamp (Φ15) is a spring‑loaded retaining clip that securely holds the air hose in place, preventing chafing and movement. It is specifically sized for 15 mm diameter tubing used in The part system.
Its durable steel construction and rubber lining protect the hose from abrasion, ensuring long‑term reliability of The part installation.
The Hex flange bolt M10 is a heavy‑duty fastener used for the main mounting points of The part brackets. Its flange eliminates the need for a separate washer, simplifying installation.
This bolt provides excellent clamping force and resistance to loosening, ensuring that The part remains securely attached to the vehicle frame.
The Hex flange nut M10 is a self‑locking nut with an integral flange, used in conjunction with the flange bolt to secure The part brackets. Its flanged base provides a wide bearing surface and distributes the load evenly.
This nut is designed to resist loosening under vibration, maintaining the integrity of The part mounting system over time.
The Spiral tube assembly is a coiled flexible hose that provides strain relief and allows for movement between The part and the chassis. Its spiral design absorbs vibrations and accommodates thermal expansion.
This assembly is made from durable polymer and is resistant to kinking, ensuring consistent air flow from The part to the vehicle’s pneumatic system.
The Spiral tube bracket is a support that holds the spiral tube assembly in a secure position, preventing it from sagging or interfering with other components. It is designed to fit the specific routing of The part system.
This bracket ensures that the spiral tube maintains its shape and function, contributing to the overall reliability of The part installation.
The Support plate is a reinforcing plate used to strengthen the mounting area for The part. It distributes the load over a larger surface, reducing stress on the chassis.
Made from heavy‑gauge steel with a protective coating, this plate ensures a solid foundation for The part, preventing flex and premature wear.
The Large washer is a heavy‑duty flat washer used under the bolt head and nut to distribute the clamping load over a wider area. It prevents damage to the support plate and bracket surfaces of The part.
Made from hardened steel, this washer ensures even pressure distribution, enhancing the stability of The part mounting.
The Hex flange bolt M8 is a mid‑sized fastener used to secure the brackets and clamps of The part. Its flange head provides a large bearing surface, simplifying assembly.
This bolt is manufactured from high‑grade steel with a corrosion‑resistant finish, ensuring long‑term reliability for The part system.
The Hex flange nut M8 is a matching nut for the M8 flange bolt, providing a secure, vibration‑resistant connection. Its flanged base eliminates the need for a separate washer and ensures even load distribution.
This nut is essential for maintaining the integrity of The part mounting, resisting loosening under dynamic conditions.
The Double tube clamp (Φ15) is a retaining clip that holds two 15 mm tubes simultaneously, keeping them organized and preventing chafing. It is used in The part system to secure both the supply and return lines.
Its robust construction and rubber lining protect the tubes from abrasion, ensuring a tidy and reliable installation of The part.
This variant of the Hex flange bolt M6 is used for securing the tube clamps and smaller brackets of The part. It shares the same high‑quality construction as the standard M6 bolt.
Its consistent quality ensures that all fastening points of The part system maintain their integrity over time.
The Hex flange nut M6 is used in conjunction with the M6 flange bolts to secure lighter components of The part. Its flanged design simplifies assembly and provides reliable clamping.
This nut is corrosion‑resistant and ensures a durable connection for The part’s ancillary parts.
The Ferrule straight joint body is a compression fitting used to connect the metal tube to the hose in The part system. It provides a leak‑free seal and allows for easy disconnection.
Made from brass with a nickel plating, this fitting is resistant to corrosion and ensures reliable air transfer from The part.
| NO. | Part NO. | Name |
|---|---|---|
| 1 | 812W54059-0007 | Rubber hose with braided layer |
| 2 | 712W51226-5013 | Tube 16 assembly air compressor/hose |
| 3 | ZQ1840620 | Hex flange bolt M6 |
| 4 | Q1801425TF2 | Hex flange face bolt with teeth |
| 5 | WG97 350169 | Angle bracket |
| 6 | WG9000365401 | Single tube clamp (Φ15) |
| 7 | ZQ1841030TF6 | Hex flange bolt M10 |
| 8 | ZQ32010T13F6 | Hex flange nut M10 |
| 9 | 712W51226-5000 | Spiral tube assembly |
| 10 | 712W51715-0113 | Spiral tube bracket |
| 11 | WG80 360083 | Support plate |
| 12 | Q40208 | Large washer |
| 13 | ZQ1840825 | Hex flange bolt M8 |
| 14 | ZQ32008 | Hex flange nut M8 |
| 15 | WG9000365403 | Double tube clamp (Φ15) |
| 16 | ZQ1840635 | Hex flange bolt M6 |
| 17 | ZQ1840640 | Hex flange bolt M6 |
| 18 | ZQ32006 | Hex flange nut M6 |
| 19 | Q80316 | Ferrule straight joint body |
Our Single-cylinder air compressor delivers consistent air pressure and flow, ensuring that your braking and suspension systems operate at peak efficiency. The robust design of The part minimises downtime and extends service intervals.
The part is tested to withstand the most demanding conditions, providing dependable performance for your Sitrak C7H.
The part kit includes all necessary hoses, brackets, clamps, and fasteners, eliminating the need for additional parts. Every component is selected for its durability and compatibility with The part.
This all‑in‑one solution simplifies ordering and installation, saving time and effort for your maintenance team.
The part is designed for straightforward installation, with clearly marked mounting points and pre‑assembled sub‑groups. The included brackets and clamps ensure a secure fit, reducing installation time.
Routine maintenance of The part is simplified by the accessible layout of the components.
We maintain a large inventory of Single-cylinder air compressor kits to ensure fast delivery to customers worldwide, with prompt shipping and real‑time tracking.
Our technical support team is available to assist with any installation queries, ensuring a smooth experience for your Single-cylinder air compressor.
The part is the heart of the vehicle’s pneumatic system, generating the compressed air needed for braking, suspension, and auxiliary functions. A reliable Single-cylinder air compressor ensures that the air reservoirs are always charged, providing immediate response when needed.
A failing Single-cylinder air compressor can lead to reduced braking performance, slow suspension adjustments, and increased risk of breakdown. Replacing it with our genuine Single-cylinder air compressor restores the system’s efficiency and safety.
The part operates under high temperatures and pressures. Our unit is constructed with heat‑resistant materials and advanced cooling features to maintain optimal performance. The braided rubber hose and metal tube assembly are designed to withstand the thermal stress of continuous operation.
The part is tested to endure extreme ambient temperatures, ensuring reliable start‑up and operation in both cold and hot climates.
When installing The part, mount the angle bracket securely to the chassis using the provided hex flange bolts and nuts. Attach the compressor to the bracket, then connect the tube assembly and the rubber hose using the ferrule straight joint body.
Secure all tubes with the single and double tube clamps to prevent chafing. Install the spiral tube assembly with its bracket to allow for movement. Check all connections for tightness and test the system for leaks before returning the vehicle to service.
To extend the life of your Single-cylinder air compressor, regularly inspect the hoses and tubes for cracks or abrasion. Check the clamps for tightness and replace any worn rubber components. Drain the air reservoirs periodically to remove moisture that could affect The part.
Lubricate the moving parts of The part as per the manufacturer’s recommendations, and replace the air filter at the specified intervals to ensure clean air intake.
This Single-cylinder air compressor is specifically designed for the Sitrak C7H chassis, fitting all variants with standard pneumatic systems. It is compatible with both manual and automated transmission configurations, and with or without air suspension.
The mounting dimensions and port sizes are identical to the factory specifications, ensuring a direct replacement without modifications. Verify your vehicle’s compressor type before ordering.
Each Single-cylinder air compressor is tested for pressure output, flow rate, and noise level before shipment. We simulate real‑world operating conditions to ensure that the compressor delivers reliable performance under load.
Our quality control process includes checking all fittings and fasteners, and verifying the integrity of the hoses and tubes. We stand behind The part with a comprehensive warranty, giving you peace of mind.
We keep a large stock of Single-cylinder air compressor kits to ensure immediate dispatch. Orders are typically processed within 24 hours, and tracking information is provided for every shipment.
Our global logistics network ensures that your Single-cylinder air compressor arrives quickly, minimising vehicle downtime and keeping your fleet operational.
Replacing a worn or damaged Single-cylinder air compressor with our genuine part is a cost‑effective way to restore the performance of your pneumatic system. The durable construction of The part reduces the need for frequent replacements, offering excellent long‑term value.
The complete kit eliminates the need for multiple purchases, saving both time and money during maintenance.
Aftermarket air compressors often use inferior materials and imprecise components, leading to leaks and premature failure. Our Single-cylinder air compressor is manufactured to the same standards as the original equipment, ensuring consistent quality and safety.
By choosing our genuine Single-cylinder air compressor, you avoid the risks associated with substandard parts and ensure that your Sitrak C7H remains reliable and compliant with safety regulations.
A properly functioning Single-cylinder air compressor is essential for the safe operation of air brakes and suspension systems. Our unit complies with all relevant safety standards and is designed to maintain system pressure without failure.
Regular inspection of The part is recommended to ensure continued compliance with safety regulations and to protect the driver and cargo.
Our Single-cylinder air compressor is produced using precision machining and automated assembly techniques, ensuring consistent quality and tight tolerances. The cylinder bore and piston rings are manufactured to exact specifications for optimal compression and efficiency.
The use of advanced materials and coatings reduces friction and wear, extending the service life of The part.
The part is designed for easy access to all service points, including the air filter, oil drain, and inlet/outlet connections. The layout allows for quick inspection and replacement of wear parts.
This service‑oriented design reduces downtime and labour costs, making The part a practical choice for fleet maintenance programmes.
We are committed to providing the highest quality Single-cylinder air compressor and supporting our customers with responsive service. If you have any questions or encounter any issues, our team is ready to assist.
Your satisfaction is our priority, and we strive to exceed your expectations with every order of The part.
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.