Current Filters

10,077 Products Available

E-3530 K&N Round Air Filter

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

E-3491 K&N Oval Air Filter

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

E-3461 K&N Oval Air Filter

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

E-3403 K&N Round Air Filter

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

E-3341 K&N Oval Air Filter

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

E-3324 K&N Oval Air Filter

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

E-3120 K&N Round Air Filter

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

E-3035 K&N Oval Air Filter

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

E-3031R K&N Round Air Filter

This K&N racing air filter is made with 2 layers of cotton and does not come oiled. It was designed to provide even lower air restriction than our replacement air filters for street vehicles. K&N racing air filters are washable and reusable and come with a one year limited warranty. More Information Designed to increase horsepower and acceleration

E-1989 K&N Replacement Air Filter for the 2008 Chevrolet HHR

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

E-0780 K&N Replacement Airbox for the 2007 Ford F550 Super Duty

K&N’s lifetime replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. This air filter with air box is designed to replace your existing factory air box and air filter. This replacement air filter and air box are street legal in all 50 states and are covered by our famous K&N

E-0644 K&N Replacement Air Filter for the 2019 Ford F250 Super Duty

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

E-3699 K&N Round Air Filter

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

E-3500 K&N Round Air Filter

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

E-1580 K&N Replacement Air Filter for the 1970 Ford Mustang

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

33-3044 K&N Replacement Air Filter for the 2014 Skoda Fabia MkIII

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

33-2848 K&N Replacement Air Filter for the 2009 Opel Vectra C

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

33-2773 K&N Replacement Air Filter for the 2001 Porsche Boxster

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

E-2015 K&N Replacement Air Filter for the 2010 Toyota Hilux Vigo

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

33-3032 K&N Replacement Air Filter for the 2013 Audi A5

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 reusable, engineered to last for the entire lifespan of your vehicle, and backed by

The Knowledge

THE KNOWLEDGE

Engine

About Engine parts

On Compare.Parts you will find a variety of parts to upgrade your engine's performance.Engine upgrades really range from mild to wild. For each engine there are different upgrade paths, so we would recommend doing your research on your particular engine as to what upgrades are best suited based on your use of the car.Breathing mods such as Air filters are a typical starting point with an induction kit fitted to help the engine breath better and often sound better too. The only downside to things like open air filters is the air intake temperatures can rise, negating the performance improvement from increased air flow.Cooling mods are essential if the car is going to be driven in anger such as a track day, aftermarket radiators by companies such as Mishimoto provide direct replacement for factory/OEM applications making it quite straight forward to install for any car enthusiast.For big power things like camshafts, pistons, rods and crankshafts are replaced with uprated items. These can affect engine displacement and timing all to release more power from the engineTurbo upgrades are also really popular and enable engines to increase the amount of force inducted into an engine, this of course will need supporting modifications such as injectors and an ECU re-calibration.