Air Intake Filters for BMW E34 M5 S38 3.5L

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We stock several replacement and performance drop-in air filters for your BMW. Replacing your intake filter (or filters, depending on vehicle) can improve your BMW's performance immediately.
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Universal High Flow Performance Air Filter - Dry (2.5" inlet) ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECS - Corporate Logo
T#:47644942
Part#: 003675ECS03-02
In Stock
Sale - Save 25% $ 58.99

This product was last offered at the strikethrough price on
06-14-2026

$ 44.24 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 58.99

This product was last offered at the strikethrough price on
06-14-2026

$ 44.24 USD
Free Shipping on orders $49 and up

Universal High-Flow Air Filter

Give your engine the airflow it deserves with this reusable, high-performance air filter—perfect as a direct replacement for an ECS intake system or as the finishing touch for your custom intake project.
Dimensions: 4.5" Base OD • 6" Filter Height • 3.5" Top OD

Upgrade from your restrictive factory filter to an ECS Tuning High-Flow Dry Air Filter and let your engine breathe freely. Improved intake flow enhances power throughout the rev range while helping maintain efficient fuel economy.

Oiled vs. Dry Filters — Which Is Right for You?

Oiled Filters

Offer slightly higher airflow for maximum performance

Require more frequent cleaning

Must be re-oiled after each cleaning

Long-term reusable design saves money over disposable paper filters

Dry Filters

Provide excellent airflow with minimal maintenance

Easily cleaned with warm, soapy water—no oiling required

Still flow significantly better than OE paper filters

Fully reusable and cost-effective

Both versions deliver superior performance over stock filters while offering the long-term benefit of reusability. Choose the option that best fits your maintenance style and performance goals.

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OEM Mahle Air Filter - E34 525i M5 S38 M50
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Mahle - Corporate Logo
T#:25341431
Part#: 13721730918
In Stock at Vendor
$ 26.99

This product was last offered at the strikethrough price on
02-23-2026

$ 21.00 USD
Free Shipping on orders $49 and up
$ 21.00 USD
Free Shipping on orders $49 and up
Replacement air filter for stock airbox. Made by OEM supplier.

This item fits the following BMWs:
1991-1995 E34 BMW 525i M5
K&N Performance Drop-In Intake Filter - E34 525i M5
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
K&N - Corporate Logo
T#:369535
Part#: 13721726916
Special Order: No Guaranteed ETA
$ 83.99 USD
Free Shipping
$ 83.99 USD
Free Shipping

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!

  • Covered by the K&N Million Mile Limited Warranty
  • Washable and reusable
  • Emissions legal in all 50 states
  • Will not void vehicle warranty
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OEM Mann Air Filter - E34 525i M5
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Mann - Corporate Logo
T#:340556
Part#: 13721726916
Ships in 1-2 days
$ 18.99 USD
Free Shipping on orders $49 and up
Replacement air filter for stock airbox. Made by an OEM supplier.

OEM Hengst Intake Air Filter - E34 325i M5
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
5X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Hengst - Corporate Logo
T#:638018
Part#: 13721726916
Ships on Jul 22, 2026
$ 15.99 USD
Free Shipping on orders $49 and up
Dirty air filters can prevent air from getting to your engine, causing poor performance, low power, and even engine stalling. Luckily, this is a quick and easy fix! Just pop open your intake airbox, pull out the old filter, insert your brand new filter, and button everything back up. Once you start and drive your car, you'll immediately be able to feel a difference! We recommend Hengst filters whenever you are performing maintenance on your BMW. Hengst is an OEM filter supplier that provides filters to some of the biggest brands in the automotive world. We trust Hengst to offer only the highest quality air filters that give you superior filtration and will stand the test of time. Try out a Hengst filter for yourself and feel the difference!
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