High-Flow BMC Panel Air Filter Compatible with Porsche 718 GT4, Spyder, GTS, and 981 Boxster/Cayman 4.0L Engines

Description

Upgrade the intake side of your 981 Boxster / Cayman / GT4 / 718 4.0L with a pair of BMC high-performance air filters — designed to replace restrictive OEM paper filters with a washable, reusable cotton gauze element. These filters significantly increase airflow to the engine, reducing intake resistance and improving throttle response, engine suction, and overall breathing — especially useful for high-revving flat-6 engines. Because they maintain strong filtration efficiency, they offer a performance boost without compromising engine protection. A great first step for those building performance-oriented or track-ready 718s.

Fitment Notes

• Compatible with 2013-on Porsche 981 Boxster / Cayman including GT4, Boxster Spyder, and 718 4.0L vehicles. 

• Drop-in replacement — installs into the factory airbox with no modifications needed. 

• Sold as a pair (left + right airbox filters) for dual-intake setup

• Washable and reusable — when maintained per BMC’s care instructions, the filter can last the life of the vehicle.

Included

• Two (2) BMC high-performance air filter elements

• Rubber sealing frame molded to OEM airbox geometry for secure fit and airtight seal

Product Specs

• Filtration media: Multi-layer cotton gauze, oiled, covered with epoxy-coated alloy mesh for durability and resistance to petrol fumes / humidity.

• Filtration efficiency: Filters particles down to 7 microns — finer than many OEM paper filters while delivering superior airflow. 

• Flow improvement: Significantly lower pressure drop across the filter compared to OEM paper, allowing better air intake flow and reducing engine breathing restriction.

• Reusable: Filter is washable and re-oilable using a BMC cleaning kit — designed for long-term use.

Product Features

• Higher Airflow + Better Filtration — Cotton-gauze media that flows more air than stock while still catching fine particles down to 7 microns.

• Reusable / Lifetime Filter — Washable and re-oilable construction makes this a long-term, environmentally friendly alternative to disposable paper filters.

• Bolt-In Fitment — Direct-fit replacement for OEM filters; no modifications necessary for installation.

• Improved Engine Response — Reduced intake restriction helps throttle response and overall engine efficiency — especially in high-rev or performance driving scenarios.

• Proven Quality — Made with BMC’s industry-grade manufacturing methods (full-molded frame, alloy mesh protection), tested for both filtration and flow.

• Maintenance-Friendly — Easily serviceable with a cleaning kit — no need for frequent replacements — ideal for build enthusiasts and daily drivers alike.

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