GSC Intake Valve Guide Set With Depth Stopper - Subaru WRX VA FK8 Bushings Please Note: DW knows that

Please Note: DW knows that proper data is required for proper tuning

These are the Kartboy shifter bushings for the 6 speed transmissions found in the 2004-2015 STI

There is no requirement for E

This is a glycol-based fluid which is great for absorbing moisture to avoid water building into the system

GSC Intake Valve Guide Set With Depth Stopper - Subaru WRX VA FK8 Bushings Please Note: DW knows thatGSC Power Division makes valve guides that fit properly, easier to install and shaped to help air flow instead of just copying the OEM design. GSC's valve guides are made from true C67410 Manganese Bronze and turned on a dedicated precision CNC turning center creating some of the tightest tolerances in the industry with the best quality control possible. Fits: FA20 DIT 2015 19 WRX FA20 2013 15 BRZ & Scion FR S