If Any doubt send us last 7 digits of VIN. F20 / F21 : 114i (102hp) - 116i (136 hp) - 118i (136 & 170 hp) - 120i (177 hp).
F30 / F31 / F35 : 316i (136 hp) - 320i (170 hp). Designed to replace the OEM Catalytic. Very good quality exhaust parts, not ANY fitting problem. High Flow Design, diameter 3 inch to 61mm same as OEM to fit plug and play.