Install chain tensioner

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.

NOTE: TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.

Drain the oil chamber in the chain tensioner when reusing the chain tensioner.
Place the chain tensioner on a level support, slowly compress in the arrow direction and relieve it.
Catch and dispose of emerging engine oil.
Repeat process 2 times.

Courtesy of BMW OF NORTH AMERICA, INC.
Replace the sealing sleeve (1) .
Parts: Sealing sleeve
Guide in and install the sealing sleeve (1) on the chain tensioner (2) .

Courtesy of BMW OF NORTH AMERICA, INC.
Guide in and install the chain tensioner (1) .

Courtesy of BMW OF NORTH AMERICA, INC.
Tighten chain tensioner (2) with commercially available tools (1) .

TIGHTENING TORQUES SPECIFICATION

Chain tensioner to cylinder head
Chain tensioner	Joining torque	20 Nm
	Angle of rotation	40°

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work

Refer to INSTALLING THE HEAT SHIELD ON THE CYLINDER HEAD .
Refer to INSTALLING THE HOLDER OF THE POSITIVE BATTERY CABLE .
Refer to INSTALLING THE CYLINDER HEAD COVER ACOUSTIC COVER .
Refer to INSTALLING DIFFERENTIAL PRESSURE SENSOR .
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 THE REAR HOOD SEAL .
Refer to INSTALLING RESONATOR .
Refer to INSTALLING ACOUSTIC COVER .
Refer to TAKING HOOD OUT OF THE SERVICE POSITION .