MAHLE cabin air filter LAK 239/S, set of two // carbon activated pollen filter // Dimensions (mm) L: 314, W: 99, H: 29 // Premium filter in OE quality High quality cabin filter reliably protects against pollen, soot and fine particulates such as tire debris and brake dust Additional carbon activated layer eliminates harmful gases such as nitrogen (NOx), ozone and sulfur (SO2) Protects air conditioning system and blower motor from premature wear Replace annually or every 10,000 miles