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E31 aFe Performance Air Filters

E31 aFe Performance Air Filters Advanced Flow Engineering (aFe) makes these high performance, high flow OE air filters which replace the restrictive factory paper filter and lets your engine breathe better. These are stock replacement filters that drop in to your BMW's factory airbox system, and will increase flow to the engine, yielding more horsepower and torque.

Paper filters do a good job in keeping dirt out but can clogged easily so that it needs to be replaced frequently. aFe's performance filters are made with a washable/reusable cotton gauze which allows more airflow. aFe's filters feature a pliable progressive polyurethane seal, the deepest pleats in the industry, minimal wicking, and are factory pre-oiled with non-surfactant containing refined oil. Made in California, USA

FeatureBenefit• Pliable progressive polyurethane seal• Tight seal without gaskets or sealants• 100% polyurethane construction• Withstands extreme engine temperatures for extended-service life• Deepest pleats in the industry• Improved airflow, filtration, and dust-holding capacity• Minimal wicking• Larger filtration area for more airflow• Factory pre-oiled with non-surfactant containing refined oil• Will not damage sensitive electronic sensors• Washable/reusable cotton gauze media• The last filter you will buy for your vehicle
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aFe Pro5R Air Filter - E39 M5, 540, E34 530, 540, E38 740, X5 4.4 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:

E39 5 series: 1997-2003 540i
E39 M5, 2000-2003 (**requires 2 filters)
E34 5 series: 1994-1995 530i & 540i
E38 7 series: 1995-2001 740i & 740iL
X5 4.4i 2001-2006 (E53 chassis)
Z8 roadster 2000-2003 (**requires 2 filters)


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.
AFE
Part #: 30-10044
Price: $68.00 (USD) 
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aFe ProDry S Air Filter - E30 1986-1991 (no M3), 86+ 528e, E34 525i (M20), E32 750iL (x2) 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 1990-1991 - 318ic 1990-1993
E30 3 series : 325e 325es 325i 325is 325xi 325ic 1986-1991
E28 5 series : 528e 1986-1988
E34 5 series : 525i 1989-1990 M20 engine
E32 7 series : 750il 1988-1994 - 2 required
E31 8 series : 850i 850ci 850csi 1991-1999 - 2 required

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
Part #: 31-10047
Price: $53.00 (USD) 
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aFe ProDry S Air Filter - E31 E32 E34 E53 1993-2006 with V8 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:

E31 8 series : 840i 840ci 1991-1999
E32 7 series : 740i 740il 1993-1994
E34 5 series : 530i 530i Wagon 540i 1993-1995
E34 : M5 1991-1993
E39 : M5 2000-2003
E53 X5 : X5 4.4i 4.6is 4.8is
Z8 : Z8

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
Part #: 31-10044
Price: $68.00 (USD) 
In Stock
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Quantity:   
aFe Pro5R Air Filter - E30 1986-1991 (no M3), 86+ 528e, E34 525i (M20), E32 750iL (x2) 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 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.
AFE
Part #: 30-10047
Price: $55.00 (USD) 
Direct Ship
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Quantity: