BMW cotton panel air filter upgrade for B58TU and B48 engines – simple, warranty-friendly performance for BMW G-Series and Toyota Supra. This drop-in MMR replacement panel air filter fits the OE airbox and instantly improves airflow, throttle response and induction sound without triggering fault codes or compromising reliability. Ideal for daily-driven cars and tuned builds alike.
Designed for the latest BMW G-Series with 2.0 turbo B48 and B46 4-cylinder engines and 3.0 turbo B58TU 6-cylinder engines, plus Toyota Supra J29, this high-flow cotton gauze panel air filter lets your engine breathe better than the restrictive paper filter. Expect a small but worthwhile performance lift, crisper response and a richer induction note. In our testing, a standard B58 showed an additional 15 Nm of torque. Many customers choose this over a full cone intake for an OEM-plus solution that keeps the factory airbox and looks stock under the bonnet.
Why choose this MMR panel air filter
- High-flow cotton gauze media for increased airflow compared to the stock paper element
- Improved induction sound while retaining the factory airbox and cold-air feed
- Direct replacement – no mapping, cutting or drilling required
- Washable and reusable – built to last the lifetime of your engine
- OEM-level fit and finish – drops straight into the OE air filter housing
- Proven results – our testing on a stock B58 showed +15 Nm torque
- Warranty-friendly upgrade for daily use and spirited driving
Real-world results
We run these MMR panel filters on our own cars and customers consistently report sharper throttle response, smoother pull through the rev range and a subtle, purposeful induction growl. It is a brilliant first modification and an easy maintenance win thanks to its washable, reusable construction.
Fitment – BMW G-Series and Toyota Supra
Engine compatibility: B48 2.0 turbo, B46 2.0 turbo, B58TU 3.0 turbo.
- BMW 2 Series G42 – 218i, 220e, 220i, 230i, M240i
- BMW 3 Series G20 – all petrol variants including 320i, 330i, 340i xDrive
- BMW 4 Series G22 G23 – all petrol variants including 420i, 430i, 440i xDrive
- BMW Z4 G29 – 20i, 30i, M40i
- Toyota Supra J29 – 2.0 and 3.0
Note: not for F-Series cars with these engines. Those require filter part number MMR01-0502.
Installation and care
- Fits the OE airbox in minutes with basic tools
- Clean and re-oil as part of routine maintenance to maintain peak filtration and flow
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Need fitting
We can supply and fit at Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.
Order your MMR cotton panel air filter today for an instant, affordable performance upgrade that you can feel every time you drive.