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:

E36 3 series: 323i 323is 323ic 325i 325is 325ic 328i 328is 328ic M3 1992-1998
E46 3 series: 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3 1999-2005
E39 5 series : 525i 528i 530i 1997-2003
E85 X3 : X3 2.5i X3 3.0i 2004-2006
Z3 : Z3 2.3 2.5 2.8 3.0 1997-2002
E85 Z4 : Z4 2.5i Z4 3.0i M54 engine 2004-2006

This version has an oil-free filter media for less maintenance. For the best flowing filter, with the best performance gain, we always recommend the standard aFe "Pro5R " filter (which has a blue pre-oiled filter media), but this oil-free filter flows only slightly less than the blue Pro5R style aFe filter, and requires no re-oiling after cleaning the filter.

aFe's MagnumFLOW Pro 5R air filter is a high flow oiled air intake filter. These are fully washable, allowing you to clean your air intake filter and immediately improve performance. The construction of the tall, deep pleats allows for ample dust and debris collection that allows for more time between intake cleanings. With the flange being polyurethane, we are confident that your aFe air filter will not leak, ensuring optimal performance.

• 5 layer fine mesh cotton gauze filter media
• Polyurethane base and top

This is a drop-in stock replacement aFe performance air filter that installs into your BMW's factory airbox. 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.

Fits the following BMWs:
E36 323i 323is 323ic 325i 325is 325ic 328i 328is 328ic M3 1992-1998
E46 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3 1999-2005
E39 525i 528i 530i 1997-2003
E83 X3 2.5i X3 3.0i 2004-2006
Z3 2.3 2.5 2.8 3.0 1997-2002
E85 Z4 2.5i Z4 3.0i M54 engine 2004-2006

Maximum Flow Pro5R Filter

This intake kit replaces your restrictive factory air box. It features a 3-angle aluminum velocity stack adapter, 1.6mm powder-coated steel heat shield, trim sealed to seal out hot engine air, and a custom aFe brand cotton filter.

This version uses aFe's highest flowing filter media, which uses a light 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.

By removing your stock intake air box, you are removing the most restrictive portion of your intake system, increasing both horsepower and torque, improving acceleration as well as throttle response.

aFe has reported gains as high as 25 hp and 35 lb/ft torque for these kits, depending on the application.

Clickhere for installation instructions.

Clickhere for Customer Review (detailed)

Want an extra layer of defense? Add a pre-filter to prevent water, mud, and sand from congesting your air intake system. This simple upgrade slides over the aFe filter of this intake kit, much like a sock, giving you an extra layer of defense, and extending the cleaning interval of your aFe intake's filter element. Best of all, using the Pre-Filter does not significantly diminish your air filters performance the smooth rush of oxygen keeps rolling right into your engine. To add the pre-filter, just select the option for the drop-down option below.

This part fits the following BMWs:
1998 - 2004 E39 540i 

Maxiumum Flow Pro5R Filter

This intake kit replaces your restrictive factory air box. It features a 3-angle aluminum velocity stack adapter, 1.6mm powder-coated steel heat shield, trim sealed to seal out hot engine air, and a custom aFe brand cotton filter.

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.

By removing your stock intake air box, you are removing the most restrictive portion of your intake system, increasing both horse power and torque, improving acceleration as well as throttle response.

For the maximum benefit in performance, we recommend upgrading your engine software with the Shark Injector (Click here for more info on the Shark Injector performance software.)

This part fits the following BMWs:
1996 - 2004 E39 Sedan 530i 

Click here for installation instructions.

AFE Summer Rebate Form

"Oil-Free" ProDry S Filter

This intake kit replaces the top-half of both your factory air boxes. It features two 3-angle aluminum velocity stack adapters, 1.6mm powder-coated steel heat shields, trim sealed to seal out hot engine air, two custom aFe brand cotton filters, all hardware, and installation instructions.

This version has an oil-free filter media for less maintenance. For the best flowing filter, with the best performance gain, we always recommend the standard aFe "Pro5R " filter (which has a blue pre-oiled filter media), but this oil-free filter flows only slightly less than the blue Pro5R style aFe filter, and requires no re-oiling after cleaning the filter.

By converting your stock intake air boxes, you are improving the most restrictive portion of your M5's intake system, increasing horse power by 10 hp, torque by 10 lb/ft, improving acceleration as well as throttle response.

10hp max gain, 10 lb/ft torque max gain

Clickhere for installation instructions.

Pro-GUARD D2 Oil Filters are the next generation in oil filter technology. Pro-GUARD D2 Oil Filters deliver increased flow and efficiency that are demanded from performance gas applications. This cartridge style filter comes with a built-in seal for a hassle free installation.