Genuine Volvo 31439768 Coolant Expansion Tank

The Genuine Volvo 31439768 Coolant Expansion Tank is an OE replacement reservoir designed to maintain proper coolant levels in your vehicle's cooling system. This factory expansion tank serves as a pressurized overflow reservoir that allows coolant to expand and contract as the engine heats and cools during operation.

Key Features:

• Genuine Volvo OE part for precise fit and reliable performance
• Durable plastic construction engineered to withstand high temperatures and pressure cycles
• Integrated level sensors and mounting points for factory-correct installation
• Includes pressure cap provisions to maintain proper system pressure
• Direct replacement for worn or cracked original expansion tanks

The expansion tank is a critical component of the cooling system, preventing air pockets and maintaining consistent coolant circulation. This genuine Volvo part ensures proper fitment and long-term durability compared to aftermarket alternatives.