Expansion Tank 812W06125-0001

812W06125-0001 is a specialized expansion tank (coolant reservoir) assembly designed for heavy-duty trucks such as the Sinotruk Howo T7H and SITRAK C7H. As a crucial component of the vehicle's cooling system, it serves essential functions.

Product Function

1.Cooling System Pressure Regulation

The primary function of the expansion tank is to regulate the pressure within the cooling system. When the engine is running, the coolant expands as it heats up, increasing in volume and pressure. The tank accommodates this excess coolant, preventing excessive pressure that could damage components. When the system cools down and the coolant contracts, the tank supplies coolant back to the system, maintaining a full cooling circuit.

2.Air Bleeding (Deaeration) Function

The tank serves a vital air bleeding function. It collects air bubbles and vapor formed within the cooling system and vents them out, ensuring no air pockets remain. This improves cooling efficiency and prevents issues like cavitation and localized overheating.

3.Coolant Level Monitoring

The tank features clearly marked level indicators (MIN/MAX lines), allowing for easy visual monitoring of the coolant level. This facilitates quick identification of low coolant levels or potential leaks, simplifying maintenance.

Main Purpose

1.Engine Cooling System Support

The tank is primarily used in the cooling systems of engines for Sinotruk Howo T7H and SITRAK C7H heavy-duty trucks. It is essential for maintaining the engine within its optimal operating temperature range under all working conditions, preventing both overheating and excessive cooling.

2.Routine Vehicle Maintenance

The easy visual level check enables simple daily inspection and top-up of coolant, helping to identify cooling system issues early and ensuring reliable vehicle operation.

3.Specialized Vehicle Compatibility

This product is specifically designed for compatibility with heavy-duty truck models like the Sinotruk Howo T7H and SITRAK C7H. It is an OEM (Original Equipment Manufacturer) grade part, guaranteeing perfect integration and reliable performance with the vehicle's systems.