Pipercross High-Flow Washable Foam Panel Air Filter for BMW 1 Series Diesel (E81 E82 E87 E88, E8x) 120d 123d 2007-on | Drop-In Replacement for OEM Air Box | Reusable Lifetime UK-Made Performance Intake Upgrade

Pipercross High-Flow Foam Panel Filter for BMW 1 Series Diesel - E81 E82 E87 E88 - 120d 123d - 2007 onwards

Unlock sharper response and reliable airflow with this British-made Pipercross foam panel element. It installs into the standard air box on BMW 1 Series diesel models and delivers stronger breathing, improved drivability and long service life. Flow-bench tested for gains in airflow of up to 30 percent over a paper element, this serviceable filter is a smart intake upgrade for daily cars, remapped setups and enthusiasts who want OEM+ refinement without the noise of an open cone kit. Backed by a lifetime warranty for road use and handcrafted in Northamptonshire.

Why this upgrade works

• Simple drop-in fitment to the factory air box with no cutting or drilling
• Higher flow compared to a disposable paper element for crisper throttle and smoother turbo spool
• Proven on the flow bench for improvements to power, torque and fuel economy potential
• Triple-layer reticulated foam is washable and reusable, outlasting cotton and paper media
• Cleans easily thanks to the open-cell structure that avoids dirt-trapping grooves
• Lifetime warranty for road use for total peace of mind
• Hand built in Britain by Pipercross

Progressive foam filtration

The multi-stage foam construction offers exceptional dust holding while maintaining strong airflow over time:

• Outer layer catches larger debris
• Middle layer retains the bulk of contaminants
• Inner layer protects the engine from the finest particles

Compatibility

BMW 1 Series diesel E81, E82, E87, E88 120d and 123d from 03/2007 onwards. Designed to fit the standard air box. If you are unsure on compatibility, contact us and we will be happy to help.

Real-world feedback

We use these filters on our own cars and our customers consistently report faster pedal response, a smoother build of boost and a subtle induction note. It is a tidy, maintenance-friendly intake enhancement that supports further tuning while keeping OEM refinement.

Installation

Home fitting is straightforward with basic tools. For professional installation, book with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Maintenance

Wash and re-oil at extended intervals compared to paper or cotton gauze thanks to the foam’s higher dirt capacity. This keeps airflow strong and performance consistent between services.

What is included

• 1 x Pipercross high-flow foam panel filter for BMW 1 Series 120d and 123d

Made in Britain

Manufactured in the UK for quality, durability and dependable performance.

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