![09D HVF Performance Air Filter [Focus RS/ST Mk3] FLASHlink even under extreme conditions](https://cdn.shopify.com/s/files/1/0759/1064/3979/files/FEN022AA_filter_01.jpg?v=1741282065)
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even under extreme conditions
aesthetics and with optimal pedal modulation in mind
• Track-Ready Reliability – Designed for use in high-performance
- ACEA C2 / C3
09D HVF Performance Air Filter [Focus RS/ST Mk3] FLASHlink even under extreme conditionsProduct Overview The 09Design Performance Air Filter is a high flow, dry element replacement for the OEM filter found on some of the most popular performance Focus models, including the Mk2 Focus RS, Mk3 Focus ST and Mk3 Focus RS. Designed to improve airflow into the engine while maintaining excellent filtration efficiency, this panel filter supports sharper throttle response and long term reliability without the drawbacks of traditional oiled filters.