Small part with a big effect: the oil drain plug is located at the lowest point of the oil pan and closes the drain opening through which the used oil completely drains off during regular oil changes. To ensure tightness after the oil change, the sealing ring should be replaced each time the oil is changed. If the sealing ring is firmly connected to the drain plug, the complete drain plug must be replaced. febi offers a wide range of oil drain plugs with and without the matching sealing ring in OE matching quality. Selected sealing rings are also available individually.