Universal Air Filter Cleaner and Degreaser (32 oz Trigger Sprayer) (99-0621) by K&N®. The only cleaner and oil authorized by K&N for reconditioning K&N filters.
The K&N Air Filter Recharge Kit includes the K&N filter cleaner and K&N oil. The K&N filter cleaner dissolves dirt and old filter oil so it can be washed away with water. Using any other type of cleaning solution could damage the cotton filter material and void the filter warranty. The K&N filter oil is the only oil specially formulated to work in combination with the cotton fabric in the K&N filter to provide superior filtration. When used as directed, it quickly penetrates the filter pleats, where it remains suspended in the cotton fabric.
K&N® is the inventor and leading innovator of reusable cotton gauze filter technology for automotive applications. The first K&N filter was conceived for racing over 40 years ago and a performance enthusiast mindset continues today throughout all levels of the company. K&N is the sales and brand leader for performance filters, including an extensive line of factory replacement filters and performance air intake kits. The company actively promotes the environmental, economical and performance advantages of long-life reusable cotton gauze filters.