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Replacing left control sensor on engine BMW N63

11 78 530


Risk of burning!
Only perform this work after engine has cooled down.

Unlock plug connection and detach.
Unclip control sensor cable at retaining clips.
Release control sensor with special tool 11 7 020 .

Installation note:

The threads of new lambda control/monitoring sensors are already coated with Never Seez Compound (refer to BMW Parts Department).

If a lambda control/monitoring sensor is to be reused, apply a thin and even coating of Never Seez Compound to the thread only.

The part of the lambda control/monitoring sensor which projects into the exhaust branch (sensor ceramics) must not be cleaned and not coated with lubricant.

Secure control sensor with special tool 11 7 020 and a torque wrench (1).

Tightening torque 11 78 1AZ:

Type Thread Tightening specification Torque
1AZ Control sensor / monitoring sensor
N63 M18 x 1.5 50 Nm
2AZ Bracket, oxygen sensor, to cylinder head cover
N63 M6 10 Nm

Installation note:

Check function of DME control unit.
Pay attention to cable routing of control sensor.

Categories: 11 Engine
Tags: control sensorn63
tisbimmer :
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