134.10 BHP 1598 cc 4 Cyl N13B16U0 (N13B16A). 2012 BMW 1 SERIES 1.6L Petrol Differential Assembly. F20/F21 LCI 116i Petrol Rear Ratio 2:81 Manual Gearbox. BMW 1 SERIES Petrol 83750 Miles. 1 SERIES 2011 -2019 F20/F21 LCI 116i Petrol Rear Ratio 2:81 Manual Gearbox.