11 53 Thermostat and Connections
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
TIGHTENING TORQUE SPECIFICATION - THERMOSTAT AND CONNECTIONS
| Type | Thread | Tightening specification | Measure | ||
|---|---|---|---|---|---|
| 1AZ | Thermostat housing to coolant pump. | N55 | M6 x 25 | 8 Nm | |
| 2AZ | Thermostat housing to holder. | N55 | 9 Nm | ||
| 3AZ | Holder to radiator | N55 | Self-tapping screw | 3 Nm | |
| 4AZ | Feed line to crankcase. | N55 | M6x16 | 8.5 Nm | |
| 5AZ | Feed line to coolant pump. | N55 | L42-48 | Hose clamp | 3 Nm |
| 6AZ | Oil-to-water heat exchanger (OWWT) feed line. | N55 | L18-24 | Hose clamp | 3 Nm |
| 7AZ | Coolant line to cylinder head (short-circuit line). | N55 | M6 x 23 | 8.5 Nm | |
| 8AZ | Coolant line to thermostat. | N55 | Hose clamp with corrugated spring | 3 Nm | |
| 9AZ | Coolant hose from thermostat to coolant pump | N55 | L42-48 | 3 Nm | |
| 10AZ | Radiator supply and drain line to exhaust turbocharger | N55 | M6 x 16 | 8 Nm | |
| 11AZ | Coolant return line to crankcase. | N55 | M6 x 16 | 8 Nm | |