The K&N E-3032R is a round, open-top racing air filter element measuring 14 in. OD, 12-1/4 in. ID and 2 in. tall. It is made with 2 layers of cotton gauze and is unoiled, so it can be washed and reused rather than replaced. Because it is a dry element, there is no filter oil to apply after cleaning.
Its main advantage over a stock paper element is airflow. It is designed to lower air restriction more than replacement air filters for street vehicles. A reusable cotton element also avoids repeat purchases at every service interval, which is the real value that offsets its higher price. Track-focused buyers searching for a 14 inch round cotton gauze racing filter, a 12.25 inch ID drop-in element, or an unoiled K&N racing air filter are looking for exactly this format.
This is a dimensional element, not a vehicle-specific part, so fitment depends on matching the 14 in. OD, 12-1/4 in. ID and 2 in. height to your existing airbox or filter housing. The filter is designed for asphalt racing only and is not intended for dirt track, off road or highway use. Street-driven vehicles should look at a street-rated element instead.