What does the BMW N55 panel air filter upgrade actually improve?

The MMX BMW N55 panel air filter replaces the factory paper element with a multi-layer cotton gauze filter that flows more air with less restriction. The result is sharper throttle response, improved engine breathing, and a more pronounced induction character compared to the OEM paper filter.

Is this compatible with the factory N55 airbox?

Yes. The MMX cotton panel filter is a direct drop-in for the factory N55 OEM airbox with no modifications required. It is not compatible with aftermarket intake systems that use a different filter housing format or cone filter arrangement.

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

A panel filter that fits within the factory airbox and meets OEM filtration standards is generally considered warranty-friendly. The MMX filter can be removed and the factory paper 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 N55 panel air filter?

The MMX cotton gauze filter is washable and reusable. Clean with a dedicated filter cleaning kit, allow to dry fully, re-oil lightly, and refit. When maintained correctly the filter lasts the lifetime of the engine, making it a more cost-effective long-term alternative to disposable OEM paper filters.

Does this fit the F87 M2 as well as the 335i and M135i?

Yes. The same filter fits the F87 M2 (2016-2018), F30/F31/F34 335i (2010-2016), F20/F21 M135i (2012-2016), F22/F23 M235i (2014-2016), and F32/F33/F36 435i (2013-2016) — all F-chassis N55-powered models.

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Description

MMX Blue Cotton Panel Air Filter for Fxx BMW M135i, M2, M235i, 335i, and 435i (N55 Engine)

BMW N55 panel air filter from MMX Performance is a direct drop-in cotton gauze replacement for the factory paper filter in the OEM airbox, covering F-chassis M135i, M235i, 335i, 435i, and M2 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 all while remaining a bolt-in upgrade that does not require any modification to the factory airbox or intake system. Built to OEM standards for fit, filtration quality, and durability, the filter is fully washable and reusable, making it a maintenance-friendly alternative to disposable paper replacements that last the lifetime of the engine. A warranty-friendly first upgrade for any N55 BMW, installable in approximately 10 minutes.

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
Improves engine breathing, throttle response, and induction character
Washable and reusable; lasts the lifetime of the engine
Built to OEM standards for fit, filtration quality, and durability
Warranty-friendly; easily returned to standard
Installs in approximately 10 minutes

Applications

BMW 335i: F30, F31, F34 | 2010-2016
BMW 435i: F32, F33, F36 | 2013-2016
BMW M135i: F20, F21 | 2012-2016
BMW M2: F87 | 2016-2018
BMW M235i: F22, F23 | 2014-2016

Notes

Compatible with N55 OEM airbox only. Not compatible with aftermarket intake systems that use a different filter housing.
Direct replacement for the OEM panel air filter; no modifications required
Sold as a single filter

Frequently Asked Questions

What does the BMW N55 panel air filter upgrade actually improve? The MMX BMW N55 panel air filter replaces the factory paper element with a multi-layer cotton gauze filter that flows more air with less restriction. The result is sharper throttle response, improved engine breathing, and a more pronounced induction character compared to the OEM paper filter.
Is this compatible with the factory N55 airbox? Yes. The MMX cotton panel filter is a direct drop-in for the factory N55 OEM airbox with no modifications required. It is not compatible with aftermarket intake systems that use a different filter housing format or cone filter arrangement.
Will fitting a performance panel filter affect my BMW’s warranty? A panel filter that fits within the factory airbox and meets OEM filtration standards is generally considered warranty-friendly. The MMX filter can be removed and the factory paper 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 N55 panel air filter? The MMX cotton gauze filter is washable and reusable. Clean with a dedicated filter cleaning kit, allow to dry fully, re-oil lightly, and refit. When maintained correctly the filter lasts the lifetime of the engine, making it a more cost-effective long-term alternative to disposable OEM paper filters.
Does this fit the F87 M2 as well as the 335i and M135i? Yes. The same filter fits the F87 M2 (2016-2018), F30/F31/F34 335i (2010-2016), F20/F21 M135i (2012-2016), F22/F23 M235i (2014-2016), and F32/F33/F36 435i (2013-2016) all F-chassis N55-powered models.

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 Filter for Fxx BMW M135i / M2 and M235i / 335i / 435i (with N55 engine) [MMR01-0102]

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MMX Blue Cotton Panel Air Filter for Fxx BMW M135i, M2, M235i, 335i, and 435i (N55 Engine)

Features

Applications

Notes

Frequently Asked Questions

About MMX Performance

Reviews