11 12 101 Replacing Cylinder Head Gasket (N55)

Special Tools Required:

11 4 430 .
11 4 470 .

IMPORTANT: Aluminum Screws/Bolts Must Be Replaced Each Time They Are Released .
Aluminum Screws/Bolts Are Permitted with and Without Color Coding (Blue).
for Reliable Identification:
Aluminum Screws/Bolts Are Not Magnetic .
Joining Torque and Angle of Rotation Must Be Observed Without Fail (Risk of Damage) .

Necessary Preliminary Tasks:

Remove CYLINDER HEAD .
Check Cylinder Head for DEVIATION FROM FLATNESS .
Check Cylinder Head for WATERTIGHTNESS .

Remove Cylinder Head Gasket.

Insert Special Tool 11 4 430 Into Feed Pipe of Oil Pump.

Fig 1: Inserting Special Tool 11 4 430 Into Feed Pipe of Oil Pump

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Courtesy of BMW OF NORTH AMERICA, INC.

Remove Remnants of Oil and Dirt From Blind Holes (1).

IMPORTANT: Work On Sealing Surface On Engine Block and On Cylinder Head with Special Tool 11 4 470 Only.
Do Not Use Any Metal-Cutting Tools.

Fig 2: Identifying Blind Holes

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Courtesy of BMW OF NORTH AMERICA, INC.

Check Adapter Sleeves (1) for Damage and Firm Seating.

Fig 3: Identifying Adapter Sleeves

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Courtesy of BMW OF NORTH AMERICA, INC.

Cylinder Head Gasket N55 Is A Beaded Metal Gasket.

Fig 4: Identifying Cylinder Head Gasket N55

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Courtesy of BMW OF NORTH AMERICA, INC.

Place Cylinder Head Gasket (2) In Direction of Arrow On Engine Block.

Fix New Cylinder Head Gasket with Fitting Sleeves (1).

Fig 5: Placing Cylinder Head Gasket On Engine Block and Securing with Fitting Sleeves

G09873547

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble Engine.