GSC Power-Division Manganese Traditional Intake Valve Guide Set of 8 | 2002-2014 Subaru WRX, and 2004-2021 Subaru WRX STI (3028-8)

GSC Power-Division Traditional Style Intake Valve Guides for Subaru EJ20/EJ25 Sometimes you have to reinvent the wheel…or at least improve it. What we have done is actually quite simple, we made valve guides that fit properly, are easier to install, and shaped to help air flow instead of just copying the OEM design. The GSC Power-Division 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. Some of you will say, “I have to hone the ID or OD when installing, who cares about finish?” When you start with a great product, you finish with an even better one, PERIOD! Benefits Shaped to improve air flow Applications Subaru EJ20 / EJ25 2002-2014 Subaru WRX 2004-2021 Subaru WRX STI What's In The Box? 8 - Valve Guides Warranty Manufacturer Standard Warranty