GSC P-D Nissan VR38DETT 6.6mm Stem Manganese Bronze Exhaust Valve Guide Stopper Style - Set of 12 (GSC3143-12)

GSC Power-Division is a leading manufacturer of high-performance valvetrain components for turbocharged and high-performance engines. Specializing in camshafts, valve springs, and retainers, GSC products are engineered to improve power, reliability, and efficiency. Trusted by enthusiasts and professionals worldwide, GSC Power-Division delivers cutting-edge solutions for both street and motorsport applications.