Description:

[Part Number] CV6Z-8K012-K BV61-8K012-KF. [Fitment] For Ford Focus 2012 2013 2014 2015 2016 2017 2018. [Pros of Expansion Tank Hose] Made of quality materials, operates normally from -40F to +275F (-40C to +135C), for most coolants, including ethylene glycol and propylene glycol based coolants, and organic acid modified coolants.. [Function of Reservoir Hose] An overflow hose connects to the radiator below the cap and the reservoir tank to store overflow of coolant. As pressures in the cooling system increase due to coolant temperatures, a valve on the radiator cap permits coolant back into the reservoir to help ease the build-up of pressure and prevent coolant loss..