What does the BMW B48 B58 panel air filter actually improve?

The MMX BMW B48 B58 panel air filter replaces the factory paper element with a multi-layer cotton gauze filter that flows more air to the turbo with less restriction. The result is sharper throttle response, improved induction sound, and up to 15Nm of additional torque on a standard B58 engine in MMX's own testing.

Is this filter compatible with the OEM airbox?

Yes. The MMX cotton panel filter is a direct drop-in for the factory B48 and B58 OEM airbox with no modifications required. It is not compatible with aftermarket intake systems that use a different filter housing or cone filter.

Will fitting a performance panel filter affect my BMW's warranty?

A panel filter that fits within the factory airbox and meets OEM standards for filtration is generally considered warranty-friendly, as it does not modify the intake system. The MMX filter can be removed and the factory filter refitted at any time. Always confirm with your dealer before fitting any performance part if warranty preservation is a priority.

How do I clean and maintain the BMW B48 B58 panel air filter?

The MMX cotton gauze filter is washable and reusable. Clean with a dedicated filter cleaning kit, allow to dry fully, and re-oil before refitting. When maintained correctly, the filter lasts the lifetime of the engine.

Does this filter fit both B48 and B58 engines?

Yes. The same filter fits both the B48 2.0L four-cylinder and B58 3.0L six-cylinder engine variants across the applicable F and G-chassis models listed in the Applications section above.

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Description

MMX Blue Cotton Panel Air Filter for Fxx and Gxx BMW 1 Series, 2 Series, 3 Series, and 4 Series (B48 and B58 engines)

BMW B48 B58 panel air filter from MMX Performance is a direct drop-in cotton gauze replacement for the factory paper filter in the OEM airbox, covering a wide range of F and G-chassis BMW 1, 2, 3, and 4 Series models. The multi-layer cotton gauze element reduces the flow restriction of the standard paper filter, improving engine breathing, sharpening throttle response, and enhancing induction character without requiring any modification to the airbox or intake system. MMX’s own testing recorded up to 15Nm of additional torque on a standard B58 engine, a small but genuine and repeatable gain. Built to OEM standards for fit, materials, and durability, the filter installs in approximately 10 minutes, is fully washable and reusable, and can be returned to standard at any time, making it a warranty-friendly first upgrade for any B48 or B58 BMW.

Features

Direct drop-in replacement for the OEM paper panel air filter; no airbox modifications required
Multi-layer cotton gauze construction for improved airflow and filtration
Up to 15Nm of additional torque recorded on a standard B58 engine
Improved throttle response and enhanced induction character
Washable and reusable; lasts the lifetime of the engine
Built to OEM standards for fit, materials, and durability
Warranty-friendly; easily returned to standard
Installs in approximately 10 minutes

Applications

BMW 218i: G42 | 2022-present
BMW 220i: G42 | 2022-present
BMW 230i: G42 | 2022-present
BMW 318i: G20, G21 | 2020-present
BMW 320i: G20, G21 | 2019-present
BMW 320Li: G28 | 2020-present
BMW 325Li: G28 | 2019-present
BMW 330i: G20, G21 | 2019-present
BMW 330Li: G28 | 2019-present
BMW 340i: F30, F31, F34, F35 | 2015-2019
BMW 420i: G22, G23, G26 | 2021-presen
BMW 430i: G22, G23, G26 | 2021-present
BMW 440i: F32, F33, F36 | 2016-2020
BMW M140i: F20, F21 | 2016-2019
BMW M240i: F22, F23 | 2016-2021
BMW M340i: G20, G21 | 2019-present

Notes

Compatible with B48 and B58 OEM airbox only. Not compatible with aftermarket intake systems.
Direct replacement for the OEM panel air filter; no modifications required
Sold as a single filter

Frequently Asked Questions

What does the BMW B48 B58 panel air filter actually improve? The MMX BMW B48 B58 panel air filter replaces the factory paper element with a multi-layer cotton gauze filter that flows more air to the turbo with less restriction. The result is sharper throttle response, improved induction sound, and up to 15Nm of additional torque on a standard B58 engine in MMX’s own testing.
Is this filter compatible with the OEM airbox? Yes. The MMX cotton panel filter is a direct drop-in for the factory B48 and B58 OEM airbox with no modifications required. It is not compatible with aftermarket intake systems that use a different filter housing or cone filter.
Will fitting a performance panel filter affect my BMW’s warranty? A panel filter that fits within the factory airbox and meets OEM standards for filtration is generally considered warranty-friendly, as it does not modify the intake system. The MMX filter can be removed and the factory filter refitted at any time. Always confirm with your dealer before fitting any performance part if warranty preservation is a priority.
How do I clean and maintain the BMW B48 B58 panel air filter? The MMX cotton gauze filter is washable and reusable. Clean with a dedicated filter cleaning kit, allow to dry fully, and re-oil before refitting. When maintained correctly, the filter lasts the lifetime of the engine.
Does this filter fit both B48 and B58 engines? Yes. The same filter fits both the B48 2.0L four-cylinder and B58 3.0L six-cylinder engine variants across the applicable F and G-chassis models listed in the Applications section above.

About MMX Performance

MMX Performance is a UK-based specialist in performance parts for BMW and MINI vehicles, crafting high-quality upgrades that blend precision engineering, rigorous testing, and motorsport heritage. Driven by enthusiast culture, MMX designs its products in the UK and puts them through track validation to ensure durability, fitment accuracy, and on-road performance. Their catalog spans drivetrain components, spacers, hardware, and chassis enhancements, all tailored to elevate both the driving experience and visual appeal of BMW and MINI models.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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MMX Blue Cotton Replacement Panel Air Filters for Fxx & Gxx BMW 1 Series, 2 Series, 3 Series, and 4 Series (with B48 or B58 engine) [MMR01-0502/MMR01-1701]

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MMX Blue Cotton Panel Air Filter for Fxx and Gxx BMW 1 Series, 2 Series, 3 Series, and 4 Series (B48 and B58 engines)

Features

Applications

Notes

Frequently Asked Questions

About MMX Performance

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