GSC 4G63 Oversized Valve Spring Seats (4041) Driveshaft Shop then we have the solution

then we have the solution for you

STM-EVO89-STD-FPRK-53501-5

If your aftermarket intake will interfere with your Radium LH Crankcase Catch Can in your Evo X

• Unique stabalizing "Precision Pins" which prevent the inlet and outlet flange from spinning

ACL Race Series rod bearings for the EJ20/EJ25 Subaru WRX and STi models

GSC 4G63 Oversized Valve Spring Seats (4041) Driveshaft Shop then we have the solutionGSC Power Division CNC turned chromoly valve spring seats for the 4G63 Evo and 1G 2G DSM. These are meant for those pushing to the absolute limits! With an additional 0. 035" built in, the need for shims and potential wrong stacking of shims is eliminated when higher spring seat pressure is required. Sold as a set of 16. Vehicle Fitment: Mitsubishi 4G63 1992 2006 Evolution I IX 1990 1999 Eclipse GST GSX 1990 1998 Talon TSi 1990 1994 Laser RS 1991 1992