Amazon.com: K&N Cold Air Intake Kit: Increase Acceleration & Engine Growl, Guaranteed to Increase Horsepower up to 33HP: Compatible with 2.3L, L4, 2016-2018 FORD (Focus RS) 69-3539TB : Automotive
Ford Focus RS 2.3L – Xtreme-Di
Original Ford Focus RS MK3 2.3 EcoBoost Upgraded Air Filter Box New 1937555 | eBay
Replacement Air Filter for Ford Focus (mk3) 2.3 Ecoboost RS 2016-2018 PR-PPF-1869-17 - Fmic.pl
GO-PARTS Replacement for 2007-2018 Ford Focus Air Filter (RS / S / SE / SEL / ST / Titanium) - Walmart.com
BLAU Ford Focus RS Oil Change Kit - 5W-50 Ford Focus RS Oil Change 2.3L Ecoboost
K&N filter for RS 2.3l | Ford Focus RS Forum
BOSCH Original Genuine Car Engine Air Oil Filter Removal Tool Product 0986AF0020 1S7G6714DA For Ford Focus MK3 | ST 2.0 | RS 2.3 - AliExpress
Ramair športové sanie Ford Focus RS MK3 2.3 ECOBOOST
Everything You Need to Know About the 2016 Ford Focus RS
Genuine Ford Focus RS Mk3 EcoBoost Oil Filter - Focus RS Mk3 2.3T - Service - Mail Order - Pumaspeed Milltek Ford Performance Tuning Milltek Sport Exhaust Ford Fiesta Focus ST RS Parts Specialist
OEM NEW 2016-2018 Ford Focus RS 2.3L Ecoboost Air Filter Lid - Fits 13-18 ST | eBay