Special tools required:

11 4 430
11 4 470

IMPORTANT: Aluminium screws/bolts must be replaced each time they are released.
Aluminium screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminium screws/bolts are not magnetic.
Jointing torque and angle of rotation must be observed without fail (risk of damage ).

Necessary preliminary work:

Remove CYLINDER HEAD .
CHECK CYLINDER HEAD FOR DEVIATION FROM FLATNESS .
Check cylinder head for WATERTIGHTNESS .

Remove the cylinder head gasket.

Insert the special tool 11 4 430 into the feed pipe of the oil pump.

Make sure it is clean, dirt particles must not fall into the oil duct.

Courtesy of BMW OF NORTH AMERICA, INC.

Remove remnants of oil and dirt from blind holes (1).

IMPORTANT: Only work on the sealing surface on the engine block and on the cylinder head with special tool 11 4 470.
Do not use any metal-cutting tools.
Illustration N52

Courtesy of BMW OF NORTH AMERICA, INC.

Check the fitting sleeves for damage and firm fit.

Courtesy of BMW OF NORTH AMERICA, INC.

The cylinder head gasket on the S55 is a beaded metal gasket.

Observe the identification.

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Replacing cylinder head gasket (S55 Engine) (2019-2022)

Use the Manual With the Right Hardware

When to See a Mechanic

Rather have a pro handle this?