2011-2018 F12/F13/F06 640i Gran Coupe
- PVD Rings (Install Guide Here)
as the increased cylinder pressure puts additional stress on the head gasket and bolts
Ferrea Spring Seat Locators are crafted from 4140 chromoly alloy with precise tolerances and a hard nitrided surface treatment
2018–Present BMW G15 M850i xDrive
Cometic Multi-layer Steel Head Gasket, BMW M20 Bore Size - Thickness:81 mm - 0.080" 2011-2018 F12/F13/F06 640i Gran CoupeThis Cometic MLS Head Gasket is designed to replace BMW part numbers 11121722734, 11121722735, 11121722737, and 11121722738, specifically for the M20B20, M20B23, M20B25, and M20B27 engines. Cometic MLS Gaskets are composed of multiple layers of stainless steel, the number of layers used varying by application. These layers consist of both proprietary, high temperature coated and uncoated stainless steel. Additional layers increase active seal height