Description: Function: Heat Sink overflow tank can balance the water tank pressure, effectively cool the engine, and enable the engine to perform its best. It can also be used as an oil collection tank to collect impurities, carbon deposits and accumulated sludge in the intake system, extending the service life of the engine.Features: Coolant overflow tank has 2x12mm barb inlet and outlet, and the thread size of the bottom drain and side port is M14x1.5.Coolant Reservoir Tank: Cleaning is easy via the bottom drain, and a visual water level hose makes it easy to monitor coolant levels.Product Size: Water coolant overflow expansion tank 168mmx83mmx255mm, screw hole 5mm, water pipe hole 9mmUniversal: Heat Sink reservoir tank fits most vehicles. Please measure before purchasing to ensure there is enough space for installation. Specification: Material: Aluminum AlloyProduct Size: 168mmx83mmx255mm, Screw Hole 5mm, Water Pipe Hole 9mm Package Includes: 1 Heat Sink Overflow Tank Note: Please allow slightly errors due to manual measurement and different monitors.