Air Filters

K&N's roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque, and are protected by the K&N No-Hassle Lifetime Limited Warranty. Engineered to provide high airflow and exceptional filtration | Filter only...

K&N's enclosed air box roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque, and are protected by the K&N No-Hassle Lifetime Limited Warranty. Enclosed air box helps protect the filter from heat in the engine...

K&N 33-2170 High-Flow Replacement Air Filter - Panel for 1998-2005 Lexus GS300 & IS300K&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...

The K&N Flame Arrestor makes the best air-filtration technology available for marine engine use. For high performance on the water, K&N Flame Arrestors will help you fly. Designed to increase horsepower & torque | Marine approved per SAE J1928 standard |...

The K&N Flame Arrestor makes the best air-filtration technology available for marine engine use. For high performance on the water, K&N Flame Arrestors will help you fly. Designed to increase horsepower & torque | Marine approved per SAE J1928 standard |...

The K&N Flame Arrestor makes the best air-filtration technology available for marine engine use. For high performance on the water, K&N Flame Arrestors will help you fly. Designed to increase horsepower & torque | Marine approved per SAE J1928 standard |...

The K&N Flame Arrestor makes the best air-filtration technology available for marine engine use. For high performance on the water, K&N Flame Arrestors will help you fly. Designed to increase horsepower & torque | Marine approved per SAE J1928 standard |...

K&N HA-4506-T Powerlid airbox cover for 2006-2014 Honda TRX450ER and TRX450R. Replaces restrictive stock lid with high-flow filter lid. Includes Drycharger wrap and jet kit.1 Year Limited Warranty. No air box modification needed.High airflow filter...

K&N's easy-to-install performance air box replaces the restrictive factory air filter and air intake housing delivering a power gain. This power boosting air intake comes with K&N's No-Hassle Lifetime Limited Warranty. Designed to improve torque and...

K&N's easy-to-install performance air box replaces the restrictive factory air filter and air intake housing delivering a guaranteed power gain. Designed to improve torque and acceleration | Easy to install, usually in 90 minutes or less | Guaranteed to...

K&N's easy to install air intake systems replace the restrictive factory air filter and air intake housing allowing for virtually unrestricted air flow. K&N air intakes come with K&N's No-Hassle Lifetime Limited Warranty. Designed to improve throttle...

K&N's easy-to-install performance air box replaces the restrictive factory air filter and air intake housing delivering a power gain. This power boosting air intake comes with K&N's No-Hassle Lifetime Limited Warranty. Designed to improve torque and...