Installing Lambda oxygen sensor

NOTE: TECHNICAL INFORMATION
Grease the threads of new oxygen sensors thinly and evenly.
For oxygen sensors that are reused, the following should be observed:
Thinly and evenly grease the oxygen sensor on the thread only. Do not clean the part of the oxygen sensor that does not protrude into the exhaust line (sensor ceramics) and do not grease.
For additional information see: 11 00... OVERVIEW OF CONSUMABLES in applicable BMW parts catalogue

Prepare the oxygen sensor.
The sensor ceramics must not be damaged.
1. Thread
2. Sensor ceramics
Lightly and evenly grease the thread (1) of the oxygen sensor monitor.

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CONSUMABLE SPECIFICATION

Brake block paste * TU = Trade Unit. TU numbers cannot be ordered! For invoicing purposes only.	3 g, Bag	83192158851
	100 g, Tube	83192158852
	5 g, TU*	83230140233

NOTE: The cable of the Lambda oxygen sensor is black. The installation location of the Lambda oxygen sensor is in front of the catalytic converter.

Screw in the Lambda oxygen sensor (1) and tighten with the special tool 0 491 074 (11 7 020).

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TIGHTENING TORQUE SPECIFICATION

Lambda oxygen sensor on catalytic converter
M18X1.5	tightening torque	50 Nm

Feed in heat shield (4) in the arrow direction and install.
Replace the cable ties (3).
Parts: Cable tie
Guide in cable tie (3) and install.
Guide the line of the Lambda oxygen sensor (1) into the bracket (2) and install.

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Feed in and install the connector (1) in the arrow direction .
Make sure that the lock (2) snaps-in audibly.

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Connect and lock the connector (1).
Make sure the connector (1) engages audibly.

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Follow-up work

Refer to INSTALLING INTAKE FILTER HOUSING .
Refer to INSTALLING THE RIGHT FRONT-END STRUT .
Refer to INSTALLING ACOUSTIC COVER .