

The Coolant Outlet is a critical component in the engine cooling system of the Sitrak C7H, responsible for directing hot coolant from the thermostat housing back to the radiator. This precision-engineered assembly ensures efficient heat dissipation, maintaining optimal engine temperatures for maximum performance and longevity.
This complete Coolant Outlet kit includes the Thermostat Outlet Pipe, Hexagon Flange Bolt Q186-M8X70-10.9-MAN183-B1, and Hexagon Flange Bolt Q186-M8X130-10.9-MAN183-B1. Every component is manufactured to OEM specifications, guaranteeing a perfect fit and reliable performance in the demanding thermal environment of the C7H engine.
The Coolant Outlet is designed to withstand continuous exposure to high-temperature coolant, typically up to 120°C, and the associated thermal cycling. Its robust construction ensures leak-free operation, preventing coolant loss that could lead to overheating and engine damage. This Coolant Outlet is an essential part of the cooling system, ensuring that the engine maintains its ideal operating temperature under all load conditions.
For complete technical specifications and ordering details, please refer to the official Sinotruk Catalog, which provides comprehensive information on all available variants and compatible truck models for the Coolant Outlet.
Whether you are performing a cooling system overhaul or replacing a corroded outlet pipe, this Coolant Outlet kit delivers factory-quality components and a straightforward installation. The included high-strength bolts ensure a secure and durable attachment, eliminating the risk of loosening due to vibration.
The Coolant Outlet is a direct replacement part that matches the original equipment in form, fit, and function. Its precision-engineered design ensures compatibility with the existing cooling system hoses and thermostat housing, reducing installation time and minimizing downtime. Choosing this Coolant Outlet means investing in the long-term health of your engine, ensuring reliable operation and reduced risk of overheating-related failures.
The Thermostat Outlet Pipe is the main component of the Coolant Outlet assembly, responsible for conveying coolant from the thermostat housing to the radiator. It is manufactured from corrosion-resistant steel with a precision-formed bend that ensures proper routing and clearance in the engine bay. The pipe features a flanged end that mates with the thermostat housing and a hose barb connection for the radiator hose, providing a secure and leak-free interface. In the Coolant Outlet system, this pipe is designed to withstand the high flow rates and temperatures of the engine cooling circuit, ensuring consistent thermal management.
This high-strength M8 flange bolt is used to secure the Thermostat Outlet Pipe to the engine block or thermostat housing. With a length of 70mm, it provides the necessary reach for deep mounting points in the Coolant Outlet assembly. Grade 10.9 with a zinc-nickel coating, it offers exceptional tensile strength and corrosion resistance, ensuring that the outlet pipe remains firmly attached even under thermal expansion and vibration. The integrated flange eliminates the need for a separate washer, simplifying installation and ensuring even load distribution. This bolt is a critical component for maintaining the integrity of the Coolant Outlet system.
This longer M8 flange bolt is used for securing auxiliary brackets or additional components in the Coolant Outlet assembly. With a length of 130mm, it accommodates deeper mounting configurations. Like the shorter bolt, it is grade 10.9 with a zinc-nickel coating, providing high strength and corrosion resistance. Its flanged head design ensures even load distribution and prevents loosening due to vibration. In the Coolant Outlet system, this bolt may be used to attach support brackets or other cooling-related components, ensuring the entire assembly remains securely mounted.
The Coolant Outlet is engineered to provide a reliable pathway for hot coolant, ensuring that the engine’s heat is effectively transferred to the radiator. This precise flow management prevents overheating, maintains stable operating temperatures, and extends engine life.
This Coolant Outlet kit includes the outlet pipe and all necessary flange bolts, ensuring you have everything needed for a full installation. The grade 10.9 bolts provide exceptional clamping force and corrosion resistance, guaranteeing a secure and long-lasting connection.
The Coolant Outlet is manufactured from premium steel and zinc-nickel coated bolts, providing excellent resistance to coolant corrosion, thermal cycling, and road salt. This ensures long-term reliability and reduces the risk of leaks.
The Coolant Outlet is manufactured to the exact OEM specifications, guaranteeing a perfect fit on the Sitrak C7H. The precision-formed pipe and correctly sized bolts ensure a hassle-free installation, saving time and labor costs.
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.