Notes: Suction Line. 2017-2018 Ford Focus SEL 2.0L 4 Cyl VIN: 2 FI DI Electronic Naturally Aspirated DOHC FLEX. 2017 Ford Focus SEL 2.0L 4 Cyl VIN: 2 FI DI Electronic Naturally Aspirated DOHC GAS. 2015-2018 Ford Focus S 2.0L 4 Cyl VIN: 2 FI DI Electronic Naturally Aspirated DOHC FLEX.