K&N Engineering Air Filter for 2012 BMW 335i/12-13 M135i F30

K&N Engineering Drop-In High-Flow Air Filter (33-2997) This listing is for one air filter, for 2012 BMW 335i and 2012–2013 BMW M135i (F30). Brand: K&N Engineering — Model: 33-2997. Upgrade your vehicle’s breathing with this washable, reusable drop-in high-flow air filter engineered for enhanced horsepower, superior filtration, and long-term value. Key Features High-Flow Design: Layered, oiled cotton media improves airflow for better throttle response and potential horsepower gains. Superior Filtration: Multi-layer media captures harmful particles while maintaining airflow to protect your engine. Washable & Reusable: Cleans easily and is built to last for the life of your vehicle—no frequent replacements. Easy Drop-In Replacement: Fits directly into the factory air box for fast, tool-free installation. Backed by Warranty: Includes K&N’s 10-Year/Million Mile Limited Warranty for long-term peace of mind. Why Choose the 33-2997? This K&N drop-in filter combines proven filtration technology with effortless maintenance. It’s ideal for drivers who want improved engine performance, reduced long-term maintenance costs, and a simple upgrade that bolts into the existing airbox. Perfect for: Daily drivers, performance enthusiasts, and anyone seeking a reliable, long-lasting air filter that enhances airflow without sacrificing protection.