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K&N's drop-in air intake filter is constructed from cotton gauze material between aluminum mesh - this makes for a long lasting, high performance drop-in intake filter. These are very easy to remove and maintain. Turner Motorsport recommends this as one of the first maintenance/modifications you make to your vehicle after you purchase!
K&N's drop in air filters allow increased airflow - dirt and particles stick to the oil on these filters, making them more effective than traditional paper filters in terms of protection. Additionally, K&N believes their filters are more efficient than paper filers - this means more oxygen getting into the engine, allowing vaporized fuel to burn more efficiently and increasing horsepower and fuel economy. The best of both worlds!
K&N's drop-in air intake filter is constructed from cotton gauze material between aluminum mesh - this makes for a long lasting, high performance drop-in intake filter. These are very easy to remove and maintain. Turner Motorsport recommends this as one of the first maintenance/modifications you make to your vehicle after you purchase!
K&N's drop in air filters allow increased airflow - dirt and particles stick to the oil on these filters, making them more effective than traditional paper filters in terms of protection. Additionally, K&N believes their filters are more efficient than paper filers - this means more oxygen getting into the engine, allowing vaporized fuel to burn more efficiently and increasing horsepower and fuel economy. The best of both worlds!
750iL/850i requires 2 filters
This version uses aFe's highest flowing filter media, which uses a lightly oiled gauze to filter out dirt and particulates, while allowing more air to flow to the intake. For the best flowing filter, with the best performance gain, we always recommend this standard aFe filter media (often called "Pro5R ", which has a blue pre-oiled filter media). We also carry this filter in the "ProDry" grey filter media, which is oil-free for only slightly less performance and no maintenance.
This is a drop-in stock replacement aFe performance air filter that installs into your BMW's factory airbox. This particular filter fits the following BMWs:
E30 3 series: 318i, 318is 318i Convertible 1990-1991
E30 3 series: 325e, 325es 1986-1988
E30 3 series: 325i, 325is 325ic, 325ix 1987-1991
E28 5 Series: 528e 1986-1988
E34 5 Series: 525i 1989-1990
E32 7 Series: 750il 1988-1994 (requires 2 of these filters).
This K&N performance cold air intake kit eliminates the restrictive air box in favor of a high flowing intake system that allows for greater power all throughout the power band. Every K&N intake features a premium air filter that is constructed from cotton gauze material between aluminum mesh - this makes for a long lasting, high performance intake filter. These are very easy to remove and maintain. Turner Motorsport recommends this as one of the first maintenance/modifications you make to your vehicle after you purchase!
K&N's air filters allow increased airflow - dirt and particles stick to the oil on these filters, making them more effective than traditional paper filters in terms of protection. Additionally, K&N believes their filters are more efficient than paper filers - this means more oxygen getting into the engine, allowing vaporized fuel to burn more efficiently and increasing horsepower and fuel economy. The best of both worlds!
Does not meet CARB emissions standards and cannot be sold to residents of California.
This product was last offered at the strikethrough price on
01-28-2026
Since 1999, aFe (Advanced FLOW Engineering) has been developing and manufacturing high quality accessories in their facility in Corona, California. Starting with air filters and intake systems, and now expanding into exhaust systems, suspension components, tuning modules, and more, aFe products are a great way to improve the performance of your BMW without altering its fundamental character. Owned by a BMW enthusiast, aFe power is recognized the world over as a leader in quality performance products for your BMW.
This is a drop-in stock replacement aFe performance air filter that installs into your BMW's factory airbox. This particular filter fits the following BMWs:
E30 M3 (1988-1991)
E30 318i (1984-1985)
E28 528e (1984-1985) and 535i/535is (1985-1988)
E12 5 series, All (1975-1981) - including 528i, 530i, 533i
E23 7 series, All except 745i (1977-1987) - including 730i, 733i, 735i, L7
E24 6 series, All except M6 (1976-1989) - incl. 630CS, 633Csi, 635CSi
This version uses aFe's highest flowing filter media, which uses a lightly oil gauze to filter out dirt and particulates, while allowing more air to flow to the intake. For the best flowing filter, with the best performance gain, we always recommend this standard aFe filter media (often called "Pro5R ", which has a blue pre-oiled filter media). We also carry this filter in the "ProDry" grey filter media, which is oil-free for only slightly less performance and no maintenance.
The Karbonius E30 3-Series S54 CSL Carbon Airbox is a premium intake upgrade engineered for BMW enthusiasts seeking improved performance and iconic CSL styling. Designed to deliver superior airflow and breathtaking sound, this carbon airbox transforms the driving experience of E30 models fitted with the S54 engine. Manufactured using lightweight, high-strength carbon fiber, it combines durability with track-inspired aesthetics, making it a standout choice for any performance enthusiast. Available through Turner Motorsport, this airbox ensures seamless compatibility and exceptional quality.
Turner Motorsport provides expert support and access to the Karbonius E30 3-Series S54 CSL Carbon Airbox, ensuring BMW owners unlock their vehicle's full potential with this high-performance upgrade.
