HIGH PRESSURE FUEL PUMP FIT BMW 1/2/3/4/5/6/7/8 SERIES X1 X2 X3 X4 X5 X6 X7 Z4
Install the high - pressure fuel pump vertically to prevent any scratching of the cylinder head. Screw in the screws at the relative positions evenly. Under no circumstances should you tighten one screw before moving on to the next.