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Home >> BMW >> 2011 >> Z4 35is >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Engine - Repair (N54) >> Cylinder Head And Cylinder Head Cover >> 11 12 101 Replacing cylinder head gasket (N54, N54T)

11 12 101 Replacing cylinder head gasket (N54, N54T)

Necessary preliminary tasks: 

Insert 11 4 430 special tool into bore holes.

Remove head gasket.

IMPORTANT: Check identification (1) on cylinder head gasket (N54).
Fig 1: Inserting 11 4 430 Special Tool Into Bore Holes
G04751044Courtesy of BMW OF NORTH AMERICA, INC.

There must be no fluids or contaminants in any of the threaded holes (1) for the cylinder head bolt connections.

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 Threaded Holes
G04751050Courtesy of BMW OF NORTH AMERICA, INC.

Identification (1) of head gasket (N54).

Gasket (3) is a beaded metal gasket with rubber coating.

Fig 3: Identifying Head Gasket Identification Mark
G04751051Courtesy of BMW OF NORTH AMERICA, INC.

Check adapter sleeves (1) for damage and firm seating.

Place head gasket (2) in direction of arrow on engine block.

Fig 4: Placing Head Gasket
G04751052Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Check cylinder head for DEVIATION FROM FLATNESS  .

Check cylinder head for WATER LEAKS  .

Assemble engine.