1151 Water Pump

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2021 MINI Cooper, 2020 MINI Cooper, 2019 MINI Cooper, 2018 MINI Cooper, and 2017 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.

B36 ENGINE (COOPER BASE):

TIGHTENING TORQUE SPECIFICATION (COOLANT PUMP)

	Type	Thread	Tightening specifications	Dimension
1AZ Coolant pump to crankcase	B32S15M0/B38M0/U0/B36M0	M6x30 Replace aluminum screws. If reusing the APPLY LIQUID SEAL COMPOUND 2.2 .	Joining torque Angle of rotation	3 Nm 90°
2AZ Coolant pump to component carrier	B32S15M0/B38M0/U0/B36M0	M6	If reusing then you must apply liquid seal compound 2.2.	10 Nm
3AZ Coolant pump housing/component carrier to crankcase	B32S15M0/B38M0/U0/B36M0	M8x35	If reusing the APPLY LIQUID SEAL 2.2 .	19 Nm
4AZ Auxiliary coolant pump to engine block	B32S15M0/B38M0/U0/B36M0	M8x22		19 Nm
5AZ Coolant pump housing/component carrier to crankcase	B32S15M0/B38M0/U0/B36M0	M 10x35	If reusing then you must apply liquid seal compound 2.2.	38 Nm

B46 AND B48 ENGINES (COOPER S AND JCW):

11 51 COOLANT PUMP - TIGHTENING TORQUE SPECIFICATION

	Type	Thread	Tightening specifications	Dimension
1AZ Coolant pump to component carrier	B42S2000/B46M0/O0/B48M0/O0	M6	If the coolant pump is reused apply liquid seal 2.2.	10 Nm
2AZ Thermostat cover to component carrier	B42S2000/B46M0/O0/B48M0/O0	M6		10 Nm
3AZ Coolant pump housing/component carrier to crankcase	B42S2000/B46M0/O0/B48M0/O0	M8x35		19 Nm
4AZ Auxiliary coolant pump to engine block	B42S2000/B46M0/O0/B48M0/O0	M8x22		19 Nm
5AZ Electric coolant pump to holder	B42S2000/B46M0/O0/B48M0/O0	hexagon nut M6		8 Nm
6AZ Auxiliary coolant pump holder to cylinder head	B42S2000/B46M0/O0/B48M0/O0	M6x16		8 Nm
7AZ Belt pulley to coolant pump	B42S2000/B46M0/O0/B48M0/O0	M6x16	If the screws are reused, clean the thread and coat with Loctite 243.	8 Nm