Original factory replacement high-flow air filter elements specifically for compact cars such as Toyota Corolla, Chevrolet Prizm, and Mazda Millenia. These elements utilize a four-layer viscous cotton fabric medium to achieve a balance between precise filtration and high intake efficiency. They support repeated cleaning and regeneration, and do not require modification to enhance the power response and throttle sensitivity of 1.6L/1.8L inline four-cylinder engines (including 4A-FE/7A-FE). They are compliant and do not affect vehicle warranty, and are compatible with original single intake air filter boxes.