Ferrea Spring Seat Locators are crafted from 4140 chromoly alloy with precise tolerances and a hard nitrided surface treatment
as the increased cylinder pressure puts additional stress on the head gasket and bolts
2011-2018 F12/F13/F06 640i Gran Coupe
Installing ARP head studs 201-4305 on a BMW M20 engine can provide several benefits
Cometic Multi-layer Steel Head Gasket, BMW M20 Bore Size - Thickness:81 mm - 0.080" Ferrea Spring Seat Locators areThis 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