COMETIC - BMW N54 N54B30 - 182CI/3.0L I6 MLX Cylinder Head GasketCOMETIC MLX (Multi Layer Stopper) gaskets utilize an integrated stopper layer for combustion chamber sealing and improved clamp load around the cylinder without increasing bore distortion. MLX technology can be found in some head gaskets and are made from the same materials as our MLS Head Gaskets. No sealants or re torque required. Material: MLX Compressed Thickness Options: . 044 or . 052 Bore Shape: Round Bore Size (MM): 85 # of layers: 4 or 5