Thermostat housing water outlet for Volvo Cooling liquid thermostat box 31316348 Plastic coolant flange​

Product Description:

Coolant thermostat housing
OE NO.:  31316348 31251249

Applicable vehicle type: For Volvo

The thermostat housing is a critical connecting component in the automotive engine cooling system. It is mounted on the engine block or cylinder head to accommodate and secure the thermostat (Thermostat), and to connect the engine coolant passages with the radiator inlet and outlet hoses. As the hub of the coolant circulation, it ensures that the thermostat precisely controls the flow direction of the coolant, maintaining the engine at the optimal operating temperature.

Core Functions

• Installation and Fixation: Provides an accurate installation position for the thermostat to ensure its temperature-sensing element accurately detects the coolant temperature.
• Coolant Flow Guidance: Controls the coolant circulation within the engine (small loop) or between the engine and radiator (large loop) based on the thermostat's open/close status.
• System Sealing: Prevents coolant leakage and maintains system pressure through gaskets and seals.
• Piping Connection: Offers multiple interfaces to connect the engine, radiator, heater hoses, and coolant temperature sensor.

• 20 years of specialized auto parts industry experience
• Expert technical team for comprehensive support
• Direct partnerships with repair shops for real-world feedback
• Premium quality parts ensuring reliability and durability
• Extensive inventory with over 500,000+ items ready to ship
• Responsive customer service with quick turnaround
• Customized solutions for specific vehicle requirements
• Professional technical guidance and installation support
• Comprehensive 12-month warranty coverage
• Competitive pricing through optimized supply chains
• Rigorous quality control meeting industry standards
• Efficient global shipping via multiple carriers