GSC Power-Division Exhaust Valve Guide Set (STD) (gsc3087-8) 40200 5-16 both originally came equipped

5-16 both originally came equipped with a clutch style mechanical fan

5 psi Pulley (Upgrades Available)

this hood offers a precise weave pattern and a glossy clear coat finish that resists chipping and flaking

Convertible EXCEPT NISMO

Crafted from the highest grade carbon fiber raw material

GSC Power-Division Exhaust Valve Guide Set (STD) (gsc3087-8) 40200 5-16 both originally came equippedGSC 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