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Home >> BMW >> 2019 >> X3 M40i >> Repair and Diagnosis >> External Pages >> Different car >> Section 575 (Functional Descriptions - F25 - Cooling System, Engine Performance) >> Cooling System - Functional Description >> Engine cooling, diesel engine >> Cooling circuit for 6-cylinder diesel engine N57D30T1

Cooling circuit for 6-cylinder diesel engine N57D30T1

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Fig 1: Engine Cooling Operation Diagram (6-Cylinder Diesel Engine N57D30T1)
G09908896Courtesy of BMW OF NORTH AMERICA, INC.
Item Explanation
1 Radiator
2 Radiator, low-temperature area
3 Electric fan
4 Thermostat
5 Coolant pump
6 Exhaust-gas recirculation cooler
7 Turbocharger, low-pressure stage
8 Engine
9 Thermostat, transmission oil auxiliary heating
10 Heat exchanger for heating system
11 Engine oil-coolant heat exchanger
12 Thermostat, transmission oil
13 Heater valve
14 Transmission oil coolant heat exchanger
15 Coolant temperature sensor, engine housing
16 Electric auxiliary water pump
17 Coolant expansion tank
18 Electrical shutoff valve, expansion tank