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Add 9 HP to 2012 to 2016 Ford Focus with Simple to Install K&N Air Intake System
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&N Replacement Air Filter: Ford Focus ST
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K&N E-2993 Focus Air Filter Replacement ST 2013-2018/RS 2016-2018
Ford Focus Air Intake
K&N Filter with Generic Air Intake system For 2012-2018 Ford Focus 2.0L 4Cyl | eBay
K&N Replacement Air Filter for Focus RS (E-2993)
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Amazon.com: K&N Cold Air Intake Kit: High Performance, Guaranteed to Increase Horsepower: 50-State Legal: Fits 2005 FORD (Focus)57-2559 : Automotive
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K&N Air Filter Direct Replacement Ford Focus ST 250 | Graham Goode Racing
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Ford Focus RS Drop In Replacement High-Flow Air Filter by K&N
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E-2993 K&N Air Filter fits FORD FOCUS RS ST 2.0 2.3 2.5 & VOLVO V40 S40 V70 24844199775 | eBay
Ford Focus RS / ST Performance Oil Filter by K&N
