Fuel filter heating device (BMW 5 Series E34)

To ensure the fluidity of diesel fuel at low temperatures, it is heated. This is done by an electric fuel filter heater. This prevents the fuel from thickening even in the most severe frost. Heating is switched on automatically at low temperatures after starting the engine.

1 Fuel filter
2 Upper part of the filter
3 Copper sealing ring
4 Air release bolt
5 Copper sealing ring
6 Temperature switch 18±1 nm
7 Threaded nipple M16x1.5
8 Fuel heater
9 Sealing ring
10 Nut
11 Filter cartridge
12 Cork
13 Sealing ring
14 Bolt
15 Spacer washer

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Article verified: Polikarpov Saveliy

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БМВ E34: Fuel system (diesel)

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