K&N 57s Performance Airbox Lid and Performance Filter Upgrade
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Delivery time: 7 -10 working day(s) unless stated otherwise in the listing. Shipping to Northern Ireland, Highlands & Islands of Scotland, Isle of Man & Isles of Scilly carries a surcharge so contact us before purchasing for a bespoke price.
K&N 57s Performance Airbox Lid and Performance Filter Upgrade
K&N filters have just launched their Gen1 Air box lid modification complete with K&N filter element, bolt on power in a matter of minutes.
TUV approved for Europe, fits lots of applications including
- Focus Mk2 RS
- Focus Mk3 ST250, Zetec S 1.6 & 1.6 Eco Boost, 1.1 Eco Boost
K&N’s 57S Performance Airboxes increase horsepower and acceleration by dramatically reducing air flow restriction caused by the original factory design. They come with K&N’s Million-Mile Limited Warranty. 57S series airboxes replace the factory air filter housing with a fully enclosed injection modified air box containing a reusable K&N air filter. Installation is easy as they are specifically engineered to use factory holes and mounting points. No additional hardware, cutting or drilling is required
Part no: ASKN8