K&N Arctic Cat 12.813in O/S L x 7.5in O/S W x .875in H Replacement Air FilterK&N off road replacement air filters are ideal for extended use in dirty and dusty off road riding and provide clean carburetion even at high altitude. Generally, no jet changes are required with just a K&N filter element. K&N replacement air filters are washable and reusable and provide high air flow with excellent filtration. This Part Fits: Year Make Model Submodel 2006 2007 Arctic Cat 400 4x4 Base 2006 2008 Arctic Cat 400 4x4 Auto Base 2006 2007