Motorcycle and Car Performance Accessories. K&N Performance Air Filter Indian Chief 2013 – 2021. This K&N Air Filter is designed to fit model years Indian Chief 2013 2014 2015 2016 2017 2018 2019 2020 2021. For over 40 years K&N has been designing and manufacturing performance air filters for motorcycles. They provide a high, virtually unrestricted air flow while maintaining filtration levels critical to ensure long engine life. Designed as a direct replacement for the stock motorcycle air filter element, K&N s washable and reusable pleated media air filter provides a large filtration area for a better throttle response, more horsepower and long service intervals. Fuel management modifications are not normally required for increased performance. Designed to provide increased horsepower and torque. Pleated media provides a large filtration area offering long service intervals. Multiple layers of woven cotton gauze media offers excellent filtration. Application specific base seal and sealing bead. Made in the USA for over 40 years. Washable & reusable, pre-oiled and ready to ride!