1 x fuel pump tightening lush. A fuel pump tightening nut is a part that keeps the fuel pump in place in the fuel tank of a car. C4 II Camsyte - 3/5 doors C4 II Pickup truck - 3/5 doors 1.2 THP 110 / PureTech 110 1.2 THP 130 / PureTech 130 1.6 HDi 115 / BlueHDi 115 2.0 HDi 150 / BlueHDi 150 Convertible 1.6 BlueHDi 100 Convertible 1.6 BlueHDi 115 Convertible 1.6 BlueHDi 120 For vehicles with right-hand drive (RHD) For vehicles with left-hand drive (LHD) CITROËN/PEUGEOT: 1531 50, 1531 51, 1531-50, 1531-51, 1531.50, 1531.51, 153150, 153151, 9685960380 C4 II Camsyte - 3/5 doors C4 II Camsyte - 3/5 doors C4 II Camsyte - 3/5 doors C4 II Pickup truck - 3/5 doors Convertible 1.6 BlueHDi 100 Convertible 1.6 BlueHDi 115 Convertible 1.6 BlueHDi 120 1.2 THP 110 / PureTech 110 1.2 THP 130 / PureTech 13.