GSC Power-Division Exhaust Valve Guides WRX 2002-2014 / STI 2004-2021 Subaru Turbo Models Vehicle Model_Prelude WEIGHTED KNOB

WEIGHTED KNOB

- Adapts to thermostatically controlled OEM oil housing

Part #: 6388

The fitment is only guaranteed with OEM oil pans

even when cold

GSC Power-Division Exhaust Valve Guides WRX 2002-2014 / STI 2004-2021 Subaru Turbo Models Vehicle Model_Prelude WEIGHTED KNOBPart #: 3027 8 What they have done is actually quite simple, they 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