S63 Valve Guides 45eX Whether you’re refining your daily

Whether you’re refining your daily street car

This kit is engineered to replace BMW part #11122165470 and is compatible with BMW N55B30 engines found in a range of models

Each set is crafted from mandrel-bent T304 stainless steel and features CNC velocity stack flanges at the turbo mount

or high-horsepower forced induction applications

S63 Valve Guides 45eX Whether you’re refining your dailyOur HD bronze valve guides for the BMW S63 engine (found in various M5 models) are engineered for high performance, high boost applications where OEM materials reach their limits. These replace the factory BMW valve guides in the cylinder head (intake and exhaust guide assemblies). Built to withstand extreme heat, increased valve spring pressures, and sustained high RPM operation, these guides deliver exceptional stability and durability under