K&N Engineering Audi A4 1.8L Drop-In Air Filter

K&N Engineering Drop-In Washable Reusable High-Flow Air Filter Brand: K&N Engineering — Product: Drop-In Washable Reusable High-Flow Air Filter for Audi A4 1.8L. This listing is for one air filter. Upgrade your engine breathing with the industry-leading K&N drop-in air filter. Engineered with layered, oiled cotton media, this high-flow filter boosts airflow while trapping harmful contaminants to help increase horsepower and throttle response. High-Flow Design: Multi-layer oiled cotton media improves airflow for better performance. Reusable & Washable: Clean, re-oil, and reinstall — built to last for your vehicle’s lifetime. Direct Fit: Drop-in replacement designed to install easily into the factory air box with no modifications. Proven Protection: Captures dirt and particles while supporting engine longevity. Warranty: Backed by K&N’s 10-Year / Million Mile Limited Warranty. This K&N high-flow drop-in filter is ideal for drivers looking for reliable performance gains, long-term value, and simple maintenance. Replace your disposable filter with a performance solution that pays for itself over time. Keywords: K&N air filter, washable reusable air filter, high-flow air filter, drop-in replacement, performance air filter, increase horsepower.