GSC Power-Division Intake or Exhaust Valve Guide Set of 16-Standard (gsc3077-8) 17125 So when it comes to

So when it comes to keeping your engine oil temps down as you push your Vehicle / 73' Porsche 911 RSR-Style Bumper hard on the street or track

The OEM EJ header really hasn’t changed much in the past 20+ years and it shows

Also available (not included): P/N 18701 6g Stealth Fuel Cell Bracket All steel

Aerodynamically engineered design for enhanced performance

GSC Power-Division Intake or Exhaust Valve Guide Set of 16-Standard (gsc3077-8) 17125 So when it comes toGSC has quite simply made a series of 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