supercharged

85 A/R | 0

Contains no ethylene glycol

Note that many cams and heads have been changed over time and the only way to verify which cam your engine needs is through visual inspection

ensuring proper alignment

S63 Valve Guides 11241307140 superchargedOur 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