Home >> BMW >> 2021 >> X7 xDrive50i >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Cylinder Head & Valve Cover - Repair (G07) (1 Of 3) >> 11 12 Cylinder Heads, Valve Covers >> 11 12 161 replace cylinder head (X7 xDrive40i 2021-2022) >> Seal the oil duct