Installing cylinder head cover

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2025 BMW X4, 2024 BMW X4, 2023 BMW X4, 2022 BMW X4, and 2021 BMW X4. However, it is still accessible from the selected car via links, so may be relevant.

Bolts of the cylinder head cover

Fig 1: Cylinder Head Cover Bolts Tightening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: RISK OF DAMAGE
Improper routing of cables and wiring harnesses.
Trapped, crushed or damaged cables may cause short circuits and malfunctions.

Route all cables without abrasions, do not trap and crush.

NOTE: TECHNICAL INFORMATION
Depending on the build level, different cylinder head covers and therefore different profile seals can be fitted.
Identify suitable cylinder head cover in the applicable BMW parts catalogue and perform the corresponding variant of the work steps.

Version with a profile seal:
Replace the profile seal (1) .

Parts: Profile seal

Insert and install the profile seal (1) .

Courtesy of BMW OF NORTH AMERICA, INC.
Version with multiple profile seals:
Replace the profile seals (arrows).

Parts: Profile seals

Insert and install the profile seal (1) .

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: TECHNICAL INFORMATION
When assembling, it is essential to observe screwing sequences and tightening torques.
Failure to comply with the regulations can lead to leaks and damage.
Guide in and install the cylinder head cover (A) .

Tighten the screws in order from (1) to (15) .

Fig 2: Cylinder Head Cover Screws Tightening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

TIGHTENING TORQUES SPECIFICATION

Cylinder head cover to cylinder head
M6x30	Tightening torque	8 Nm
	Tightening torque	11 Nm

Insert and install the engine ventilation line (2) .
Ensure that locks (1) engage audibly.

Courtesy of BMW OF NORTH AMERICA, INC.
Guide in and install the wiring harness section (3) for sensor system 1.

Tighten down screw (2) .

TIGHTENING TORQUES SPECIFICATION

Wiring harness section for engine to cylinder head cover
M6	Tightening torque	8 Nm

Courtesy of BMW OF NORTH AMERICA, INC.

Connect and lock the connector (1) on the intake camshaft sensor.
Make sure the connector (1) engages audibly on the intake camshaft sensor.
Connect and lock connector (1) on the exhaust camshaft sensor.
Make sure the connector (1) engages audibly on the exhaust camshaft sensor.
Secure clamps (2) .

Courtesy of BMW OF NORTH AMERICA, INC.
Guide in and install the wiring harness section (1) for sensor system 2.
Make sure that the locks (arrows) engage audibly.

Courtesy of BMW OF NORTH AMERICA, INC.
Feed in and install the differential pressure sensor (2) at the holder (3) .
Connect connectors (1) and lock.
Make sure the connector (1) engages audibly.

Courtesy of BMW OF NORTH AMERICA, INC.
CAUTION:
Improper routing of the positive battery cable.
Risk of short circuits!
- Route the positive battery cable without abrasions and do not trap.
Feed in the bracket (2) of positive battery cable and install.

Tighten down screws (1) .

TIGHTENING TORQUES SPECIFICATION

Holder, positive battery cable to cylinder head cover
6X18	Tightening torque	6 Nm

Courtesy of BMW OF NORTH AMERICA, INC.

Insert and install wiring harness section (1) for sensor system 2 from guides (2) .

Courtesy of BMW OF NORTH AMERICA, INC.
Secure clamps (1) .

Courtesy of BMW OF NORTH AMERICA, INC.
Feed in and install the wiring harness section (2) for the injectors and the ignition coils.
Secure clamps (1) .

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work

Refer to INSTALLING BOTH ACTUATORS .
Refer to PREPARING THE INJECTORS FOR INSTALLATION .
Refer to INSTALLING THE RAIL WITH INJECTORS .
Refer to INSTALLING HIGH PRESSURE PUMP .
Refer to INSTALLING THE HIGH-PRESSURE LINE BETWEEN THE HIGH-PRESSURE PUMP AND THE HIGH-PRESSURE RAIL .
Refer to INSTALLING FUEL DELIVERY LINE .
Refer to INSTALLING IGNITION COIL .
Refer to INSTALLING THE CYLINDER HEAD COVER ACOUSTIC COVER .
Refer to INSTALLING THE ACOUSTIC COVER FOR THE ENGINE, FRONT .
Refer to INSTALLING RESONATOR .
Refer to ACTIVATING ELECTRICAL SYSTEM .
Refer to ACTIVATING THE 48 V ELECTRICAL SYSTEM .
Refer to INSTALLING THE SECOND END PANEL UNDERNEATH .
Refer to INSTALLING RIGHT SEALING FRAME .
Refer to INSTALLING ACOUSTIC COVER AT REAR .
Refer to INSTALLING THE COWL UPPER PART .
Refer to INSTALLING TENSION STRUT ON LEFT AND RIGHT SHOCK TOWER .
Refer to INSTALLING WINDSHIELD PANEL COVER .
Refer to INSTALLING LEFT AND RIGHT WIPER ARM .
Refer to INSTALLING THE REAR RIGHT ENGINE COMPARTMENT COVER .
Refer to INSTALLING THE COVER OF THE ENGINE COMPARTMENT ON THE REAR LEFT .
Refer to INSTALLING ACOUSTIC COVER .
Refer to INSTALLING THE REAR HOOD SEAL .
Refer to SECURING THE EPS WIRING HARNESS TO THE ELECTROMECHANICAL STEERING GEAR .
Refer to INSTALLING FRONT UNDERBODY PROTECTION .
Refer to TAKING HOOD OUT OF THE SERVICE POSITION .