2012 Ford Focus K&N Filter Install - YouTube
K&N Engine Air Filter: High Performance, Premium, Washable, Industrial Replacement Filter, Heavy Duty: E-9289 Fits select: 2013-2015,2018 FORD FOCUS ST - Walmart.com
K&N Replacement Air Filter Focus RS mk3
K&N 57S Air Filter Induction/Intake/Airbox Kit For Ford Focus RS Mk3 - 57S-4000 | eBay
Definitely recommend the K&N filter for "sound reasons" : r/FordFocus
2007 Ford Focus2.0L L4 Gas Air Filter
2013 Ford Focus2.0L L4 Gas Air Filter
K&N 69-3518TS Performance Air Intake System
Ford Focus RS Drop In Replacement High-Flow Air Filter by K&N
K&N Ford Focus ST Typhoon Performance Intake — Panda Motorworks
K&N Replacement Air Filter FORD C-MAX 1.6L-L4; 2007 — JST Performance, LLC
K&N E-2993 Focus Air Filter Replacement ST 2013-2018/RS 2016-2018
Outerwears Pre-filter water-repellent sleeve for closed top air filter – FSWERKS
Amazon.com: K&N Cold Air Intake Kit: Increase Acceleration & Engine Growl, Guaranteed to Increase Horsepower up to 10HP: Compatible with 2.0L, L4, 2012-2018 Ford Focus, 69-3517TS : Automotive
33-2002 K&N Air Filter - Fits 1985-1988 Ford Ranger
Amazon.com: K&N Engine Air Filter: Reusable, Clean Every 75,000 Miles, Washable, Premium, Replacement Car Air Filter: Compatible with 2018-2020 FORD (Escape, Focus IV), 33-3131 : Automotive
K&N Drop-In Air Filter, 2013-18 Focus ST/16-18 Focus RS, Air Intake: Store Name
K&N Air Filter Ford Focus II 1.4L/1.6L/1.8L/2.0L L4 (03-07) Performanc – Redline360
K&N 69-3531TS Performance Air Intake System
K&N Air Filter Ford Focus II 1.4L/1.6L/1.8L/2.0L L4 (03-07) Performanc – Redline360
K&N Typhoon Performance Intake For Ford Focus ST - SPEED PERF6RMANC3
&N Replacement Air Filter: Ford Focus ST
K&N Filter with Generic Air Intake system For 2012-2018 Ford Focus 2.0L 4Cyl | eBay
Ford Focus Mk3 K&N 57I Cone Air Filter - Focus Mk3 1.0 EcoBoost - Filters - Panel - Pumaspeed Milltek Ford Performance Tuning Milltek Sport Exhaust Ford Fiesta Focus ST RS Parts Specialist
K&N E-2993 Hi-Flow Air Intake Drop in Filter for 2012-2018 Ford Focus / ST / RS | eBay
K&N Typhoon Cold Air Intake Ford Focus 2012-2018 (Non Turbo) – Import Image Racing
Cobb High Performance Cylindrical Air Filter - Ford Focus / Focus ST 2 – FSWERKS
