The Auxiliary Heater Duct Assembly is a comprehensive air distribution system designed for the Sitrak C7H wide‑body cab, ensuring efficient cabin heating and defrosting in cold climates.
This Auxiliary Heater Duct Assembly includes the heater unit, intake horn, ducting, air distributor, vents, and all necessary fasteners, providing a complete solution for upgrading or replacing the auxiliary heating system.
Engineered for optimal airflow and durability, the Auxiliary Heater Duct Assembly delivers warm air to the driver and passenger areas, enhancing comfort during cold weather operations. Its components are made from high‑grade materials that resist heat and wear.
For detailed fitment and compatibility information, please refer to the Sinotruk Catalog.
This Auxiliary Heater Duct Assembly is a genuine OEM‑grade part, ensuring a perfect fit and reliable performance for your Sitrak C7H.
The Suction bell mouth (wide body) is the intake component that draws fresh air into the heater system. This Auxiliary Heater Duct Assembly part is designed with a wide opening to maximise airflow while reducing noise. Made from impact‑resistant plastic, it is shaped to fit the cab’s front panel perfectly.
The Round head bolt (M3299-D-6X25-ST) is a high‑strength fastener used to secure various components of the Auxiliary Heater Duct Assembly. Its round head design allows for easy installation with standard tools, and the zinc‑plated finish provides corrosion resistance.
The Heater upper cover is the top casing that encloses and protects the heater core and fan. This Auxiliary Heater Duct Assembly component is moulded from heat‑resistant plastic and features a smooth surface for easy cleaning. It also includes mounting points for the suction horn and air ducts.
This self‑tapping screw features an inner hexagon drive and is specifically designed for securing plastic components within the Auxiliary Heater Duct Assembly. Its sharp threads bite into plastic without cracking, providing a secure hold. The screw is made from stainless steel for durability.
The Heater (altitude optimized) is the central heating unit that generates warm air for the cab. This Auxiliary Heater Duct Assembly component is specially calibrated to maintain efficient combustion at high altitudes, ensuring consistent performance in mountainous regions. It features a robust burner and a quiet fan motor.
The Hex flange nut M6 is a locking nut with an integrated flange that distributes the clamping load. It is used to secure the heater and ducting in the Auxiliary Heater Duct Assembly, providing a vibration‑resistant connection. The flange eliminates the need for a separate washer.
The Air outlet duct is a rigid tube that directs heated air from the heater to the cab interior. This Auxiliary Heater Duct Assembly component is designed with a smooth inner bore to minimise airflow resistance. Its shape ensures that warm air reaches the windshield and footwell areas effectively.
The Heater lower cover forms the bottom enclosure of the heater unit, protecting it from dust and debris. This Auxiliary Heater Duct Assembly part is made from durable plastic and includes drainage holes to prevent water accumulation. It is designed for easy removal during maintenance.
The Transition elbow is a curved connector that links the heater outlet to the main ducting. This Auxiliary Heater Duct Assembly component allows for a smooth change in airflow direction, reducing turbulence and pressure loss. It is made from heat‑resistant polymer with reinforced ribs.
The Hot air elbow is a pre‑formed bend that directs warm air to specific outlets. This Auxiliary Heater Duct Assembly component features a 90‑degree angle and is equipped with integrated sealing lips to prevent air leaks. Its robust construction withstands continuous hot air flow.
The Hose clamp is a spring‑loaded band that secures flexible hose connections in the Auxiliary Heater Duct Assembly. Its worm‑gear design allows for easy tightening and adjustment, ensuring a leak‑proof seal. Made from stainless steel, it resists corrosion and maintains clamping force.
The Air distributor (wide body) is the central manifold that splits the heated air to multiple outlets. This Auxiliary Heater Duct Assembly part is designed with adjustable vanes to balance airflow between the windshield, dashboard, and footwell vents. Its compact size fits perfectly under the cab’s dashboard.
The Right air duct (wide body, symmetric with left) is a mirror‑image duct that routes air to the passenger side. This Auxiliary Heater Duct Assembly component ensures balanced heating across the cab. It is made from the same durable material as the left duct and features identical connection points.
The Left air duct (wide body) directs warm air to the driver side. This Auxiliary Heater Duct Assembly component is precision‑moulded to fit the cab’s left side, with integrated clips for easy installation. Its design minimises air leakage and provides consistent airflow.
The Seat air duct (wide body) is a specialised duct that supplies warm air to the seat area, improving driver comfort. This Auxiliary Heater Duct Assembly component features a flexible section that allows for seat movement without disconnecting the airflow. It is insulated to prevent heat loss.
The Sealing block is a foam or rubber pad that fills gaps between the duct and the cab structure. This Auxiliary Heater Duct Assembly component prevents air leakage and reduces noise transmission. It is cut to size and adheres to the duct surface with a self‑adhesive backing.
The Air outlet (driver side) is the adjustable vent that directs warm air onto the driver. This Auxiliary Heater Duct Assembly part features louvers that can be angled to control airflow direction and intensity. Its sleek design blends seamlessly with the cab interior.
This tapping screw features a cross recessed pan head and is used for fastening plastic components in the Auxiliary Heater Duct Assembly. Its self‑tapping thread cuts into the material, providing a strong hold. The pan head provides a large bearing surface.
The Plastic nut seat (ST 4.8) is a threaded insert that provides a strong anchor point for screws in plastic panels. This Auxiliary Heater Duct Assembly component is pushed into a pre‑drilled hole and locks in place, allowing secure fastening without the risk of stripping.
This drawing provides the specifications for the rear floor shim used with the auxiliary heater in the wide‑body cab. It serves as a reference for correctly positioning the Auxiliary Heater Duct Assembly components to ensure proper clearance and fitment.
This assembly combines a hex bolt with a spring washer and a flat washer, providing a complete fastening solution for the Auxiliary Heater Duct Assembly. The spring washer prevents loosening under vibration, while the flat washer protects the surface from damage.
The Cover is a protective lid that closes off access openings or unused ports in the ducting system. This Auxiliary Heater Duct Assembly component keeps dust and debris out, maintaining the cleanliness and efficiency of the air distribution network.
| NO. | Part NO. | Name |
|---|---|---|
| 1 | 710W61949-0040 | Suction bell mouth (wide body) |
| 2 | MQ6-07213-4314 | Round head bolt (M3299-D-6X25-ST) |
| 3 | MQ6-07213-4314 | Round head bolt (M3299-D-6X25-ST) |
| 4 | MQ6-07213-4314 | Round head bolt (M3299-D-6X25-ST) |
| 5 | 710W61949-0039 | Heater upper cover |
| 6 | MQ6W07210-3310 | Inner hexagon tapping screw for plastic M3299-D-5 |
| 7 | YZ160084220001 | Heater (altitude optimized) |
| 8 | ZQ32006 | Hex flange nut M6 |
| 9 | 710W61949-0120 | Air outlet duct |
| 10 | 710W61949-0026 | Heater lower cover |
| 11 | AZ16D484000012 | Transition elbow |
| 12 | 710W61950-0371 | Hot air elbow |
| 13 | 190003989314 | Hose clamp |
| 14 | 710W61950-0263 | Air distributor (wide body) |
| 15 | 710W61950-0264 | Right air duct (wide body, symmetric with left) |
| 16 | 710W61950-0265 | Left air duct (wide body) |
| 17 | 710W61950-0266 | Seat air duct (wide body) |
| 18 | 710W61942-0080 | Sealing block |
| 19 | 710W61950-0259 | Air outlet (driver side) |
| 20 | 710W61950-0260 | Air outlet (driver side) |
| 21 | 710W61949-0110 | Air outlet (driver side) |
| 22 | Q2714822F31 | Cross recessed pan head tapping screw |
| 23 | 810W90685-0374 | Plastic nut seat (ST 4.8) |
| 24 | 712-62860-0032 | Rear floor shim processing drawing (additional heater, wide body) |
| 25 | Q1460616 | Hex bolt, spring washer and flat washer assembly |
| 26 | 810-61942-0078 | Cover |
Our Auxiliary Heater Duct Assembly includes every component needed for a complete installation, from the heater unit to the final vents and fasteners.
This eliminates the need for additional parts and ensures a seamless fit, saving time and effort during installation.
The heater unit in our Auxiliary Heater Duct Assembly is specially calibrated for high‑altitude operation, ensuring reliable heating even in mountainous regions.
This feature is critical for trucks that frequently operate in diverse terrains, providing consistent warmth and defrosting capability.
All components of the Auxiliary Heater Duct Assembly are manufactured from high‑quality materials that resist heat, vibration, and ageing.
The precision‑moulded ducts and connectors ensure a snug fit, minimising air leaks and maximising heating efficiency.
We stock a wide range of Auxiliary Heater Duct Assembly kits to ensure fast delivery to any destination worldwide.
Our dedicated support team is available to assist with technical questions, installation guidance, and after‑sales service.
The Auxiliary Heater Duct Assembly is not just a convenience; it is a necessity for drivers operating in cold regions. It provides rapid cabin warming, reduces windshield fogging, and enhances overall safety by maintaining clear visibility.
A well‑designed Auxiliary Heater Duct Assembly also improves fuel efficiency by allowing the engine’s cooling system to be used more effectively, reducing the need for additional heating sources.
The ducts and elbows in the Auxiliary Heater Duct Assembly are engineered to minimise airflow resistance, ensuring that warm air reaches all outlets with minimal temperature drop.
The use of smooth‑bore tubing and optimised bend radii reduces turbulence, resulting in quieter operation and more efficient heat distribution.
When installing the Auxiliary Heater Duct Assembly, start by mounting the heater unit securely to the cab floor using the supplied bolts and nuts. Route the ducts according to the vehicle’s layout, avoiding sharp bends that could restrict airflow.
Use the provided clamps and sealing blocks to secure connections and prevent rattles. After installation, test the system for leaks and proper airflow before reassembling the interior trim.
To keep your Auxiliary Heater Duct Assembly in top condition, regularly inspect the hoses and connections for signs of wear or looseness. Clean the air intake and outlets to prevent dust buildup, which can reduce airflow.
Periodically check the heater’s burner and fan for any abnormal noise, and replace the fuel filter as recommended by the manufacturer. Following these simple steps will extend the life of the Auxiliary Heater Duct Assembly.
This Auxiliary Heater Duct Assembly is designed specifically for the wide‑body cab of the Sitrak C7H, accommodating the larger interior space and unique dashboard layout. It is compatible with both day cab and sleeper variants.
The part numbers match the original factory specifications, guaranteeing a direct replacement without any modifications.
Every component of the Auxiliary Heater Duct Assembly is tested for durability, heat resistance, and airflow performance. We simulate extreme cold conditions to ensure that the heater starts reliably and delivers sufficient warmth.
Our quality control process includes checking all fasteners and fittings for proper fit, guaranteeing that the Auxiliary Heater Duct Assembly meets the highest standards of reliability.
We maintain a large inventory of Auxiliary Heater Duct Assembly kits to ensure prompt dispatch. Orders are processed within 24 hours, with tracking information provided for all shipments.
Our logistics network covers most regions, ensuring that you receive your Auxiliary Heater Duct Assembly quickly, minimising vehicle downtime.
Replacing a faulty heating system with our Auxiliary Heater Duct Assembly is a cost‑effective way to maintain driver comfort and safety. The durable construction reduces the frequency of repairs, while the complete kit eliminates the need for multiple purchases.
For fleet operators, investing in a genuine Auxiliary Heater Duct Assembly ensures consistent performance across all vehicles, simplifying maintenance and parts inventory management.
Aftermarket heater duct assemblies often use inferior plastics that warp or crack under heat. Our Auxiliary Heater Duct Assembly is manufactured to OEM specifications, using heat‑stabilised materials that maintain their shape and integrity.
Choosing our genuine Auxiliary Heater Duct Assembly ensures that you get a product that is designed to last, providing consistent performance throughout the vehicle’s life.
The Auxiliary Heater Duct Assembly is designed with safety in mind, incorporating flame‑retardant materials and secure fastening to prevent any risk of fire or detachment during operation.
All components comply with relevant automotive safety standards, giving you peace of mind that your installation meets regulatory requirements.
Our Auxiliary Heater Duct Assembly is produced using advanced injection‑moulding and assembly techniques that ensure consistent quality and precision. The use of automated equipment guarantees that every component meets the dimensional tolerances required for a perfect fit.
This level of manufacturing excellence is the reason why our Auxiliary Heater Duct Assembly is trusted by professional workshops and fleet managers alike.
The ducting layout in the Auxiliary Heater Duct Assembly is designed to direct warm air strategically to the most critical areas: the windshield for defrosting, the footwells for overall comfort, and the seat area for driver wellbeing.
This targeted approach ensures that the Auxiliary Heater Duct Assembly provides maximum comfort with minimal energy consumption.
We are confident in the quality of our Auxiliary Heater Duct Assembly and offer a satisfaction guarantee. If you encounter any issues, our support team is ready to assist you.
Your satisfaction is our priority, and we strive to exceed your expectations with every order of the Auxiliary Heater Duct Assembly.
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