This fuel pump control unit relay is compatible with A1 models from 2017–2018, including petrol variants equipped with the following engine and drivetrain configurations: S1 AWD (1984cc, 170kW, CWZA engine code), 1.0 TFSI FWD (999cc, 60kW or 70kW, CHZE/CHZB/DKLD engine codes), 1.4 TFSI FWD (1395cc, 92kW, CZCA/CZDD engine codes), 1.4 TSI FWD (1395cc, 110kW, CZEA engine code), and 1.8 TFSI FWD (1798cc, 141kW, DAJB engine code).It fits vehicles with chassis codes 8X1, 8XK, 8XA, and 8XF.This part replaces OEM part numbers 1K0906093J, 1T0906093A, and 132909.