GSC Power-Division Intake Valve Guides Stopper Style 2002-2014 WRX / 2004-2021 STI

GSC Power-Division valve guides with depth stop fit properly, are 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. What this means for you and your installer is less time fitting guides to the head due to holding the tightest tolerances in the industry with the best quality control possible.

Sold in a set of 8.