K&N Air Filter Pl-5712 High flow cotton filter media is designed to increase airflow by as much as 50, resulting in an increase of horsepower and torque. K&N Air Filters are tested to ensure increased airflow when compared to OEM paper filters. Engineered to last throughout the life of your motorcycle and backed by K&N Million Mile Limited warranty. Fitment: Diesel 1028 Models require filter # Pl-5712. Diesel 904cc Models require filter # Pl-8007. Features: Designed to provide increased performance Pleated media provides a large filtration area offering long service intervals Multi-layers of woven cotton gauze media offers excellent filtration Fits directly into OEM airbox with application specific sealing bead to ensure a precise fit Fuel management modifications are not normally required for increased performance Washable, and reusable, pre-oiled and ready to ride Made in the Usa, for over 40 years