Performance Air Filters

K&N 85-2003 pre-cut foam insert for 2017-2019 Ford F-250, F-350, F-450, and F-550 Super Duty (DSL models). Replaces OEM foam block for improved filtration in your diesel truck air box. Washable and reusable.Specs:Foam materialHeight: 8.75in, Length: 4...

K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is...

Constructed with a synthetic filter media, this crankcase vent filter comes with a K&N embossed rubber top and steel base. The tube is 1/2 inch in diameter and clamps directly on to metal or plastic tubing where venting is needed. 1/2 inch zinc tube |...

K&N's high-flow air filters are available as a replacement for your stock motorcycle air filter element. They are custom engineered to fit your specific application and are designed to provide low restriction and increased performance, while providing...

K&N Marine Style Vent Hose Adapters mount between the top and bottom plates of a custom chrome air filter assembly. Vent adapters accommodate breather hoses without drilling into the filter base.

K&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...

K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is...

K&N crankcase vent filters are perfect for racing applications, vintage cars or individuals who want to add some aesthetics to their classic carbureted engine. The 62-1000 crankcase vent filter has a K&N embossed rubber top with a steel base. The 3/8...

K&N TB-6713 panel replacement air filter for 2013-2017 Triumph Daytona 675 and Street Triple. Provides increased horsepower with excellent engine protection.Benefits:Direct OEM fitWashable reusable mediaNo-Hassle Lifetime Limited Warranty9.875in x 5...

Universal adapters for smog tubes, crankcase and valve cover vents. Requires drilling hole in air filter base or valve cover. All come with mounting hardware and gasket.

K&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...

K&N's high-flow air filters are available as a replacement for your stock motorcycle air filter element. They are custom engineered to fit your specific application and are designed to provide low restriction and increased performance, while providing...