$595.00 USD
$595.00 USD












The MMX Performance BMW B48 / B58 / B58TU Cotton Panel Air Filter is one of the simplest and most cost-effective induction upgrades available for the modern BMW four- and six-cylinder turbo range. Engineered as a direct OE-replacement panel filter, the MMX cotton gauze element drops straight into the factory airbox and immediately frees up airflow to the turbo without any of the noise, complexity, or fitment headaches of an open intake.
The cotton gauze media flows substantially better than the OE paper element while still trapping intake debris before it reaches the MAF and turbo. There's a real-world worthwhile gain in airflow on both the four-cylinder B48 and the inline-six B58 / B58TU motors, and because the airbox itself is unmodified, the install is fully reversible, no cutting, no drilling, no permanent modification. Fitting takes roughly 10 minutes with hand tools.
The filter is fully washable and reusable: a service cycle gives many years of effective filtration, eliminating the recurring cost of OE paper filters. For B48- and B58-powered F2X, F3X, and G2X / G4X owners, or anyone running a tune and looking for a clean, low-cost first step into bolt-on power gains, this is one of the best value-per-dollar upgrades on the platform.
Listing covers all three engine variants. Please select the correct engine variant for your vehicle from the dropdown before ordering.
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$595.00 USD
$595.00 USD
This product can expose you to chemicals such as lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
For a complete list of chemicals known to cause harm, visit https://www.p65warnings.ca.gov/chemicals.
Under the federal Clean Air Act (42 U.S.C. §7522(a)(3)), it is illegal to manufacture, sell, install, or use any part that defeats or alters a motor vehicle’s emission control system for use on public roads. Unless a product has received an Executive Order (EO) from the California Air Resources Board (CARB), it is not legal for use or installation on any pollution-controlled vehicle driven on public highways.
Some states have CARB-equivalent or independent emissions laws. Customers are responsible for verifying local regulations before purchasing or installing emissions-related products.
All performance, racing, or competition parts sold by this company are intended solely for off-road, closed-course, or competition use on vehicles that are never registered or used on public highways.
Kies Motorsports, LLC sells and markets these products for lawful use only. We do not condone or authorize the use of emission-control defeat devices or any modification that violates the Clean Air Act or state regulations.