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K&N 57i Series Kit | Focus ST 2013-2018
K&N 2013-2016 Ford Focus ST 57i Series Kit


 
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List Price: $301.43
Our Price: $171.99
Savings: $129.44

Availability:: Usually Ships in 24 Hours
Product Code: 57S-4000
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Description Technical Specs
 
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.

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