Connecting the upper radiator to the thermostat. Over time, rubber hoses can become hard, with the internal walls covered in sediment and the plastic fittings turning brittle or the internal o-rings simply leaking. A must replace hose for any E60 5-Series owner looking to preventively maintain or restore their cooling system. We've found these Febi hoses to be great quality, which are manufactured by an original equipment supplier.

Part Number: 17127519255
Rein Part Number: CHR0049P