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Home >> BMW >> 2021 >> M4 Base, Standard Trans >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Cylinder Head -- Repair M4 (G82 & G83) >> 11 12 Cylinder Head With Lid >> 11 12 100 Removing and installing cylinder head (M4 RWD models, 2021-2023) >> Clean sealing surfaces

Clean sealing surfaces

NOTE: RISK OF DAMAGE 
Damage to the surface  .
The use of metal-cutting tools (e.g., emery cloths) for cleaning surfaces can damage them and lead to leaks and/or engine damage  .
  • Do not use any metal-cutting tools.
G15329349Courtesy of BMW OF NORTH AMERICA, INC.
CAUTION: Swirling dirt particles caused by compressed air  .
Injury hazard! 
  • Collect dirt particles, e.g. when blowing out, use cloth to do so.
  • Wear safety goggles.
G15329350Courtesy of BMW OF NORTH AMERICA, INC.
G15329351Courtesy of BMW OF NORTH AMERICA, INC.