K&N Round Air Filter Fits Ford Focus Fits Volvo C30/S40/V50/V70 - KNE-2993 | eBay
K&N Replacement Air Filter Focus RS mk3
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
K&N Air Filter For Ford Focus MK3 1.0 / 1.6 Petrol EcoBoost 2010 - 2015 - E-2993 | eBay
K&N filter for RS 2.3l | Ford Focus RS Forum
PRORAM Crossover Pipe Induction Intake Kit Air Filter for Ford Focus RS mk3 | eBay
2012 Ford Focus K&N Filter Install - YouTube
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
Ford Focus RS | Sound & Power with K&N Air Filter - YouTube
Ford Focus Air Intake
57S-4000 K&N Filters Air Intake System ▷ AUTODOC price and review
K&N Select Engine Air Filter: High Performance, Premium, Washable, Replacement Filter, SE-2993 Fits select: 2012-2018 FORD FOCUS, 2013-2019 FORD ESCAPE - Walmart.com
Focus RS Mk3 K&N Air Filter E-2993
Amazon.com: K&N Engine Air Filter: Reusable, Clean Every 75,000 Miles, Washable, Replacement Car Air Filter: Compatible with 2007-2019 Ford/Lincoln/Volvo (C-Max Escape, Grand, Kuga, Focus, Tourneo, MKC), E-2993 : Automotive
K&N 57S Air Filter Induction/Intake/Airbox Kit For Ford Focus RS Mk3 - 57S-4000 | eBay
K&N X-Stream Air Filter and adaptor Ring - Mk3 Focus ST - Focus Mk3 1.0 EcoBoost - Filters - Panel - Pumaspeed Milltek Ford Performance Tuning Milltek Sport Exhaust Ford Fiesta Focus ST RS Parts Specialist
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
Amazon.com: K&N Engine Air Filter: Reusable, Clean Every 75,000 Miles, Washable, Replacement Car Air Filter: Compatible with 2007-2019 Ford/Lincoln/Volvo (C-Max Escape, Grand, Kuga, Focus, Tourneo, MKC), E-2993 : Automotive
Focus RS & ST how to install K&N air filter - YouTube