Pipercross Foam Sports Panel Air Filter for BMW 4 Series F32 Coupe 420i 2.0 Turbo (2016-on) B48/B48B20A - High-Flow Washable Reusable Drop-In OEM Airbox Replacement Intake Filter, Performance Induction Upgrade, UK Made, Serviceable Panel Insert

Pipercross Uprated Foam Intake Filter Insert for BMW 4 Series F32 420i B48B20A 2016 onwards

Give your 2.0 turbo BMW the breathing it deserves. This British made Pipercross panel insert is a direct fit for the standard airbox on the BMW 4 Series F32 420i with the B48B20A engine, delivering freer airflow, sharper throttle response and long term value thanks to a serviceable foam construction.

Why enthusiasts choose this intake element

• Direct fit swap for the factory paper element in the OE airbox on the 420i B48B20A
• Up to 30 percent more airflow compared with a standard paper filter for improved engine response
• Proven gains on the bench with benefits to drivability, torque and efficiency
• Triple layer foam captures contaminants while maintaining strong flow for longer service intervals
• Washable and reusable to reduce running costs and waste
• Lifetime warranty on road use filters
• Hand built in Northamptonshire, UK

How the multi layer foam works

Pipercross uses a three stage foam media rather than thin paper or cotton pleats. The coarse outer layer arrests larger debris, the mid layer traps the bulk of dust, and the fine inner layer protects the intake from the smallest particles. Because the foam has greater dust holding capacity, it stays free flowing for longer which helps your B48 breathe consistently even on extended service intervals.

Fitment

• BMW 4 Series Coupe F32 420i
• Engine: B48B20A 2.0 petrol turbo
• Model years from 01/2016 onward where equipped with B48B20A
• Installs in the standard BMW airbox as a direct swap

Installation and care

Simple, tool light install in the factory airbox. Clean and re oil when required using an appropriate foam filter service kit. The open cell structure resists clogging, so maintenance is quick and intervals are extended versus many pleated designs.

Fitting service

Want it installed professionally or combined with other upgrades. Book fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Trusted by us and our customers

We run Pipercross filters on our own builds and customer cars. Feedback is consistently positive on build quality, induction sound, throttle response and long term value.

Common search terms

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Order today for cleaner intake air, reliable filtration and a noticeable uplift in response on your BMW 4 Series 420i.