Upgrade your vehicle’s factory air box with the K&N Engineering 33-3134 High-Flow Replacement Air Filter. This washable, reusable filter uses layered, oiled cotton media engineered to improve airflow while capturing contaminants for exceptional engine protection.
Designed as a drop-in replacement, the K&N 33-3134 installs easily into the factory air box. Its reusable construction is engineered to last for the lifespan of your vehicle and is designed to provide an increase in horsepower while supporting superior airflow and performance.
K&N replacement High-Flow Air Filters are backed by a No-Hassle Lifetime Limited Warranty, also described as a 10-Year/Million Mile Limited Warranty. The filter is proudly made in the USA for trusted quality and reliability. K&N lists the 99-5000 Filter Care Service Kit Aerosol as an associated product for filter maintenance.
Features:
- High-Flow Performance: Layered, oiled cotton media is engineered to improve airflow and support an increase in horsepower.
- Engine Protection: Designed to capture contaminants while providing exceptional engine protection.
- Washable and Reusable: Reusable construction is engineered to last for the lifespan of your vehicle.
- Easy Installation: Designed as a drop-in replacement for the factory air box.
- Limited Warranty: Backed by K&N’s No-Hassle Lifetime Limited Warranty, also described as a 10-Year/Million Mile Limited Warranty.
- Made in USA: Proudly made in the USA for trusted quality and reliability.
- Vehicle Fitment: Fits 2020–2024 BMW X3 and 2020–2023 BMW X4 applications listed by K&N.
Fitment:
2020 BMW X3 M
2020 BMW X3 M40i
2020 BMW X4 M40i
2021 BMW X3 M40i
2021 BMW X4 M40i
2022 BMW X3 M40i
2022 BMW X4 M40i
2023 BMW X3 M40i
2023 BMW X4 M40i
2024 BMW X3 M40i
2024 BMW X4 M40i
2025 BMW X4 M40i