aircraft-grade steel

and M44 engines

5 mm connecting rods are designed to fit BMW N63 and S63 engine found in the following applications:

Whether you're building for high-boost turbo applications

or E39 528i

Cometic Multi-layer Steel Head Gasket, BMW M52TU/M54 1301415 aircraft-grade steelThis Cometic MLS Head Gasket is designed to replace BMW part numbers 11127501304 and 11127501305, specifically for the M52TU and M54 aluminum block 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 and can be used to fine tune