

| No. | Part No. | Name |
|---|---|---|
| 1 | 811W25441-0826 | Wire Fixing Bracket |
| 2 | 811W52160-6115 | Solenoid Valve |
| 3 | WG9727710002 | Electronic Air Pressure Sensor |
| 4 | 811W25503-0275 | Air Pressure Signal Switch |
| 5 | WG9925710001 | Trumpet Horn (Double Wire) |
| 6 | 811W52160-6117 | Solenoid Valve |
| 7 | ZQ18408210 | Hexagon Flange Bolt M8 |
| 8 | ZQ32008 | Hexagon Flange Nut M8 |
| 9 | 1406070015 | Sealing Ring |
| 10 | WG9000360292 | Sealing Ring |
| 11 | WG9725580086 | Lead Seal |
| 12 | 190000810930 | Lead Seal Wire |
The Wire Fixing Bracket is a sturdy steel mounting plate designed to securely hold wiring harnesses and cables in place within the chassis area. It prevents chafing, reduces the risk of shorts, and keeps the Chassis Electrical Systems organized and protected from mechanical damage.
The Solenoid Valve is an electropneumatic switching device that controls the flow of compressed air to various chassis functions, such as suspension leveling, brake actuation, or horn operation. Its robust design ensures fast response and leak‑free performance, making it a critical part of the Chassis Electrical Systems.
The Electronic Air Pressure Sensor is a precision transducer that converts air pressure into an electrical signal for the vehicle’s control units. It monitors the air brake system pressure and provides real‑time data to the driver display and electronic control systems, ensuring safe operation of the Chassis Electrical Systems.
The Air Pressure Signal Switch is a normally‑open pressure switch that closes when the air pressure reaches a preset threshold, providing a warning signal to the driver or to other electronic modules. It is a vital safety device within the Chassis Electrical Systems, alerting operators to low pressure conditions.
The Trumpet Horn (Double Wire) is a powerful acoustic warning device that produces a loud, penetrating sound to alert other road users. Its double‑wire design ensures reliable electrical connection and is compatible with the standard horn relay. This component is an integral part of the Chassis Electrical Systems, enhancing vehicle safety.
The Hexagon Flange Bolt M8 is a high‑strength fastener used to mount various Chassis Electrical Systems components, such as sensors, valves, and brackets. Its integrated flange provides a wide bearing surface and eliminates the need for a separate washer, ensuring secure and vibration‑resistant fixing.
The Hexagon Flange Nut M8 is the matching nut for the flange bolt, providing a reliable clamping force. Its flanged design distributes load evenly over the mounting surface, protecting components from damage and maintaining the integrity of the Chassis Electrical Systems under vibration.
The Sealing Ring is an elastomeric O‑ring that provides a leak‑tight seal between pneumatic components and their mounting ports. It prevents air loss and ingress of dirt and moisture, ensuring the long‑term reliability of the Chassis Electrical Systems in harsh operating environments.
The Lead Seal is a tamper‑evident security component used to mark critical adjustments or connections within the Chassis Electrical Systems, such as calibration settings on sensors or valves. It allows inspectors to verify that the system has not been altered without authorisation.
The Lead Seal Wire is a durable steel wire used to secure the lead seal to the component. It passes through the seal and around a fixed point, ensuring that the seal cannot be removed without breaking the wire. This adds an extra layer of security to the Chassis Electrical Systems.
Every component in this Chassis Electrical Systems kit is manufactured to Sinotruk’s original specifications, ensuring exact fitment and seamless integration with the C7H’s existing electrical and pneumatic architecture. No modifications are needed.
All sensors, valves, and seals are built to withstand extreme temperatures, vibration, and moisture. The Chassis Electrical Systems components are tested for longevity, ensuring that your truck remains operational in the toughest conditions.
Our kit includes every fastener, sealing ring, and security seal needed for a full installation. This eliminates the need to source additional parts, simplifying maintenance and reducing downtime for the Chassis Electrical Systems.
With precise pressure sensing, reliable horn signalling, and tamper‑evident seals, these Chassis Electrical Systems contribute to the overall safety and regulatory compliance of your vehicle, giving you peace of mind on every journey.
The Chassis Electrical Systems are the nervous system of your Sitrak C7H, linking the driver’s controls with the mechanical actuators that manage braking, suspension, and warning functions. This comprehensive kit provides all the essential components required to keep these systems functioning at peak performance.
Proper maintenance of the Chassis Electrical Systems is crucial for vehicle safety and reliability. The electronic air pressure sensor and signal switch work together to monitor brake system pressure and provide early warnings of any drop, while the solenoid valves ensure precise control of air‑operated devices.
The trumpet horn is a powerful warning device that is often overlooked until it fails. With its double‑wire connection, this horn is easy to install and provides a loud, clear sound that can be heard in noisy traffic environments, making it an essential part of the Chassis Electrical Systems.
Fastening hardware is equally important; the M8 flange bolts and nuts are specifically chosen for their resistance to loosening under vibration. Combined with the wire fixing bracket, they keep all cables and pipes securely routed, preventing chafing and electrical shorts within the Chassis Electrical Systems.
Sealing rings are small but critical; they prevent air leaks at every pneumatic connection, ensuring that the system maintains correct pressure. Our kit includes two different sizes of sealing rings to accommodate various ports found on the C7H chassis.
The lead seal and lead seal wire are often required for regulatory inspections, especially on vehicles that carry hazardous goods or operate in regions with strict tamper‑proofing laws. They allow authorities to verify that critical adjustments have not been altered.
When replacing worn or faulty components, using genuine parts for the Chassis Electrical Systems is essential to avoid compatibility issues and maintain the vehicle’s warranty. Our kit offers a cost‑effective solution that eliminates the guesswork of sourcing individual parts.
Installation is straightforward with basic hand tools, and all components come with clear identification markings. The wire fixing bracket simplifies cable management, and the pre‑formed sealing rings ensure a leak‑free fit every time.
We recommend regular inspection of the Chassis Electrical Systems, especially the sensors and solenoid valves, as they are exposed to road debris and moisture. Replacing aging components with our genuine kit prevents unexpected failures and reduces downtime.
For fleet operators, standardising on this Chassis Electrical Systems kit simplifies inventory management and ensures that all vehicles receive the same high‑quality components. Bulk discounts are available on request.
The electronic air pressure sensor provides a 0‑5V analog output that is compatible with most diagnostic tools, making it easy to verify system health during scheduled maintenance. This feature is a valuable asset for proactive fleet management.
The solenoid valves are rated for continuous duty and feature a fast response time of less than 20 milliseconds, ensuring immediate actuation of pneumatic devices whenever the driver commands.
The trumpet horn’s double‑wire connection allows for easy integration with the existing horn relay, and its compact size makes it suitable for installation in tight chassis spaces without obstructing other components.
All sealing rings are made from NBR (nitrile rubber) that resists oil, ozone, and temperature extremes, ensuring a durable seal that lasts the life of the vehicle.
We stand behind the quality of our Chassis Electrical Systems with a 12‑month warranty against manufacturing defects. Should any part fail under normal use, we will replace it promptly.
We ship worldwide with full tracking. Expedited shipping is available for urgent orders. Use the Send Email or Get Quotation buttons to request a customised quote for your fleet or specific requirements.
Choosing genuine Chassis Electrical Systems components ensures that your Sitrak C7H remains reliable, safe, and compliant with all regulatory standards. Aftermarket alternatives often lack the precision and durability of genuine parts.
The comprehensive nature of this kit saves you time and money, as it eliminates the need to source each component individually. It is the ideal solution for workshops and fleet operators alike.
Thank you for considering our Chassis Electrical Systems for your Sitrak C7H. We are confident that our OEM‑quality parts will exceed your expectations in terms of performance, durability, and value.
Regular replacement of worn sensors, valves, and seals is a proactive way to avoid costly breakdowns. Our kit provides everything you need to perform a complete overhaul of the chassis electrical and pneumatic controls.
The lead seal and wire are supplied in sufficient length for multiple applications, and the sealing rings come in two sizes to cover all common connections on the C7H chassis.
We maintain a large stock to ensure fast delivery, even for large orders. Contact our sales team to discuss volume pricing and customised logistics.
With the increasing demands on truck electronics and pneumatics, having reliable Chassis Electrical Systems is no longer optional – it is essential for safe and efficient operation. Trust our genuine components to keep your C7H running at its best.
Order your Chassis Electrical Systems kit today and experience the peace of mind that comes with using genuine Sinotruk parts.
We are committed to providing the highest quality components and exceptional customer service. Should you have any technical questions, our support team is ready to assist.
The Chassis Electrical Systems are a vital part of your truck’s overall health. Invest in genuine parts and ensure that your C7H continues to deliver the performance and reliability you expect.
Upgrade your truck with our comprehensive Chassis Electrical Systems kit – the smart choice for safety, compliance, and peace of mind.
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.