BMW N55 - Components; N55, Cooling System Components

77
N55 Engine
Components
N55, Cooling System Components
Index Explanation Index Explanation
A
Auxiliary radiator
7
Bypass line for small cooling circuit
B
Coolant feed line to auxiliary radiator
8
Thermostat
C
Oil-to-coolant heat exchanger
9
Electric coolant pump
D
Coolant feed line to oil-to-coolant heat exchanger
10
Exhaust turbocharger supply line
E
Coolant return line from auxiliary radiator
11
Thermostat for transmission oil cooling
1
Zone 1 feed line, heating heat exchanger
12
Coolant feed line to engine block
2
Zone 2 feed line, heating heat exchanger
14
Transmission oil-to-coolant heat exchanger
3
Coolant valve
15
Connection, transmission oil line
4
Expansion tank
16
Connection, transmission oil line
5
Equalization line
17
Return, heating heat exchanger
6
Radiator