

| No. | Part No. | Name |
|---|---|---|
| 1 | WG9000361101 | Straight Connector Body NG12/NW9 |
| 2 | WG9000361204 | Right‑angle Connector Body NG12/NW9 |
The Straight Connector Body NG12/NW9 is a direct inline fitting that joins NG12 and NW9 pneumatic tubing, maintaining a continuous flow path within the AMT Transmission’s air control circuit. Its corrosion‑resistant brass construction ensures a leak‑free seal and reliable performance under the demanding conditions of heavy‑duty truck operation.
The Right‑angle Connector Body NG12/NW9 is a 90‑degree fitting that enables compact routing of air lines within the AMT Transmission’s pneumatic control system. Its nickel‑plated brass body offers excellent corrosion resistance and a secure, leak‑free connection, allowing for efficient use of space in the transmission’s tight packaging.
Our AMT Transmission is manufactured to Sinotruk’s original specifications, guaranteeing perfect compatibility with the C7H drivetrain. Every gear, synchroniser, and pneumatic component is engineered for long‑term durability and precise shifting.
The AMT Transmission optimises gear selection based on load, speed, and terrain, reducing fuel consumption by up to 5% compared to traditional manuals. The intelligent shift logic keeps the engine in its most efficient operating range.
With the AMT Transmission, drivers no longer need to operate a clutch pedal or manually select gears. This reduces physical effort and allows the driver to focus on the road, enhancing safety and comfort on long journeys.
Built with heavy‑duty gears and robust pneumatic actuators, the AMT Transmission withstands the high torque of modern diesel engines. The sealed housing protects against contaminants, reducing the need for frequent servicing.
The Sitrak C7H AMT Transmission represents a significant advancement in heavy‑truck drivetrain technology, combining the mechanical efficiency of a manual gearbox with the convenience of fully automatic operation. This system uses a sophisticated electronic control unit (ECU) that communicates with the engine and other vehicle systems to determine the optimal shift points.
The AMT Transmission uses a combination of pneumatic and electronic actuators to engage and disengage gears, as well as to control the clutch. The pneumatic circuit is fed by the vehicle’s compressed air system and includes a network of valves, sensors, and connector bodies such as the straight and right‑angle fittings described above. These components ensure that the actuator receives the correct air pressure at the right time, enabling fast, smooth gear changes.
One of the key advantages of the AMT Transmission is its ability to adapt to driving conditions. The ECU continuously monitors vehicle speed, engine load, throttle position, and brake application, and selects the appropriate gear to maximise performance and fuel economy. This adaptive logic reduces the need for driver intervention, making the truck easier to operate, especially in stop‑and‑go traffic or on steep gradients.
The AMT Transmission also contributes to reduced powertrain wear. By shifting precisely at the optimal engine speed, it minimises clutch slip and gear impact, extending the life of the transmission components. Additionally, the system includes a diagnostic feature that can alert the driver or technician to any issues, facilitating proactive maintenance.
The straight and right‑angle connector bodies are integral to the AMT Transmission’s pneumatic control system. The straight connector provides a direct, low‑resistance path for air flow, while the right‑angle connector allows for compact routing in the confined space around the transmission. Both are made from high‑quality brass with nickel plating, ensuring resistance to corrosion and vibration.
Over time, the pneumatic fittings in an AMT Transmission can wear or become contaminated, leading to sluggish shifting or leaks. Replacing these components with genuine parts restores the system’s responsiveness and reliability. Our kit includes the exact fittings used in the original factory assembly, guaranteeing a perfect seal and fit.
Installation of these connector bodies is simple, as they are designed for push‑to‑connect operation. Simply cut the polyamide tubing to length, push it into the fitting until it clicks, and the seal is complete. This ease of installation makes the AMT Transmission’s pneumatic system easy to service in the workshop or in the field.
The use of genuine OEM fittings ensures that the AMT Transmission retains its factory shift quality. Aftermarket fittings may have slight dimensional differences that can affect the seal or restrict air flow, leading to inconsistent shifting. Trust only genuine components for your C7H’s transmission.
For fleet operators, the AMT Transmission offers a significant return on investment through reduced fuel consumption, lower maintenance costs, and increased driver retention. The system’s reliability and efficiency have been proven in millions of kilometres of real‑world operation, making it a trusted choice for leading logistics companies.
The AMT Transmission is compatible with all C7H engine variants and axle ratios, and it can be paired with both manual and automated clutch actuation. Its modular design allows for easy integration with other vehicle systems, such as the retarder and engine brake.
Regular maintenance of the AMT Transmission includes checking the air pressure and inspecting the pneumatic lines for leaks. The connector bodies should be checked for secure connections, and any worn or damaged fittings should be replaced promptly. Our kit provides the exact fittings needed for this purpose.
The AMT Transmission also offers a manual override mode, allowing the driver to take control of gear selection when desired. This feature is particularly useful in slippery conditions or when descending steep grades, where engine braking is essential.
We back our AMT Transmission components with a 12‑month warranty against manufacturing defects. 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 AMT Transmission parts ensures that your C7H maintains its original performance and fuel efficiency. Aftermarket parts may not have the same material properties or tolerances, leading to premature wear and poor shifting.
The AMT Transmission’s ECU is programmed to adapt to the driver’s style over time, providing a personalised shift feel. The pneumatic system plays a crucial role in this adaptation, as the speed and pressure of the actuator determine the shift quality.
We are committed to providing the highest quality components and exceptional customer service. Choose our AMT Transmission fittings for peace of mind.
Don’t compromise on shift quality. Replace your aging pneumatic fittings with our genuine kit and enjoy the smooth, precise gear changes that the AMT Transmission is known for.
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 AMT Transmission components for your Sitrak C7H. We are confident that our genuine OEM products will deliver the reliability and performance you expect from Sinotruk.
The AMT Transmission is a key component of the C7H’s drivetrain, and its pneumatic control system requires precise, high‑quality fittings. Our straight and right‑angle connector bodies are manufactured to the highest standards, ensuring that your transmission shifts as smoothly as the day it left the factory.
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 transmission and pneumatic systems.
With proper installation and regular maintenance, these AMT Transmission fittings will provide years of dependable service, keeping your gear changes crisp and reliable.
Upgrade your C7H with the genuine AMT Transmission components – the smart choice for reliability, efficiency, and long‑term value.
We are proud to be a trusted supplier of OEM Sinotruk parts. Contact us today to order your AMT Transmission fittings and experience the quality that only genuine components can deliver.
Don’t wait until a pneumatic leak compromises your transmission’s performance. Replace your aging fittings 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 AMT Transmission is an essential part of your truck’s drivetrain. Choose genuine Sinotruk parts for the best results.
We are confident that our genuine AMT Transmission components will exceed your expectations. Order today and keep your C7H shifting smoothly and efficiently.
We are proud to offer this high‑quality AMT Transmission fitting kit, which includes the essential connector bodies needed for a reliable pneumatic control circuit. It is the most complete solution available for the Sitrak C7H.
Our AMT Transmission components are built to meet the highest standards of quality and durability. You can trust them to perform when you need them most.
We look forward to serving your Sitrak C7H needs. Thank you for choosing our genuine parts for your vehicle.
We are committed to providing the best service and quality. Trust our AMT Transmission fittings to deliver the performance you expect.
Order now and ensure your truck is equipped with the best pneumatic fittings available. We are here to support you every step of the way.
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.