The heater gets its heat from the hot water circulating in the engine cooling system and releases it to the car cabin against which it is placed. Nissens' heaters are made according to our strict quality demands. We ensure that the product fits into the mounting casette and that the proper connections and extra foam rubber are included for installation. A control test of Nissens' heaters ensures a long service life and prevents odour problems due to oil residue or similar. All products are clearly marked with a Nissens reference no. and a serial no. to show that it is quality-assured.