2004-2008 Subaru WRX STi Copper Bronze Intake Valve Guides by Ferrea
Ferrea€™s high quality copper-bronze blended alloy valve guides are developed with proprietary heat treatment processes, allowing for greater heat dissipation, heat resistance, and lubricity properties for the next generation of high performance race engines.
Ferrea valves guides are CNC precision machined to exact tolerances. They are ideal for intake and exhaust applications and are compatible with titanium and stainless steel valves.
Please Note: Use Ferrea Valve Seal Part# VS1016
Features
- Intake + .001 Over size
- Copper | Bronze
Benefits
- Compatible with titanium and stainless steel valves
