Hatchback radiator bleeder hose 31686793 Water tank pipe for Volv o Engine radiator coolant pipe

Product Description:

Auto water tank hose tube
OE NO.:  31686793  32222278

Applicable vehicle type: For Vol vo

Radiator Bleeder Hose (commonly abbreviated as RBH, also known as Coolant Bleed Hose for Radiator) is a critical venting component within the automotive cooling system. Its primary function is to expel trapped air from the radiator and the highest points of the main circulation loop, ensuring full coolant flow and preventing poor heat dissipation and engine overheating caused by air locks. It also assists in balancing system pressure.

Core Function

• Eliminate air blockage to prevent local cooling failure and abnormal temperature rise, thereby protecting engine components such as the cylinder block and cylinder head.
• In conjunction with the radiator cap and expansion tank, it balances system pressure and reduces pressure impact on the water pump and radiator.
• Assists in the reflux and replenishment of coolant during thermal expansion and contraction, maintaining stable system liquid level.

• 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