K&N Filters air filter details
K&N Filters Replacement Air Filter BMW M135I 3.0L/335I / BMW 435I/235I / BMW I8 (KNN33-2997)
The K&N Filters Replacement Air Filter BMW M135I 3.0L/335I / BMW 435I/235I / BMW I8 (KNN33-2997) is engineered to increase airflow and performance while providing outstanding engine protection. Designed to fit a range of BMW models, including the M135I, 335I, 435I, 235I, and I8, this air filter is an ideal upgrade for drivers who want long-lasting, washable filtration. Built to last up to 50,000 miles under usual driving conditions before cleaning is needed, it offers a cost-effective alternative to disposable filters. Improve throttle response and enhance efficiency with a precision-fit filter designed for performance.
Features and Specifications:
Vehicle Fitment: 2012-2016 BMW M135I 3.0L, BMW 335I / 2013-2016 BMW 435I, BMW 235I / 2014-2016 BMW I8
Height: 1.25 in (32 mm)
Outside Length: 10.5 in (267 mm)
Outside Width: 8.563 in (217 mm)
Weight: 1.3 lb (0.6 kg)
Engineered Power: State-of-the-art air filter media boosts horsepower and acceleration while enhancing overall engine performance.
Rugged Construction: Made from durable, premium materials and advanced construction methods for long-lasting performance.
4 Layers of Protection: Premium cotton gauze treated with a specialized tacking agent blocks and traps harmful contaminants.
Low Maintenance: Clean every 75,000 miles (5 years) under normal highway driving conditions.
Reusable Design: Replacing disposable filters with washable, reusable air filters saves up to $125 over 200,000 miles.
Easy Installation: Pre-oiled and ready for quick, hassle-free installation into the factory air box.
Reduces Waste: This helps reduce landfill waste by eliminating the need for disposable air filters and packaging.
Product identification
- Brand: K&N Filters
- Model / MPN: KNN33-2997
Air filter replacement: see the listed specifications for this model.




