GSC Exhaust Valve Guide w/ Stopper – +0.003" Oversize Single for Mitsubishi 4G63T – GSC3003.003-1
Built for Mitsubishi 4G63T engines, this GSC Power-Division exhaust valve guide features a stopper-style design and +0.003" oversize for enhanced fitment precision. Ideal for high-performance applications requiring tighter clearances and improved valve control under heat and boost.
Standard-size guides are available individually or in sets of 8. Oversized options (+0.001" and +0.003") are sold separately to support custom machining and advanced tuning.
GSC3003 Standard Dimensions:
- Total Length: 1.950 in / 49.53 mm
- Outer Diameter: 0.4750 in / 12.07 mm
- Valve Stem Diameter: 6.6 mm
Perfect for DSM and Evo platforms, this guide helps maintain consistent valve operation and long-term reliability in turbocharged builds.
Fitment:
- 1990 - 1999 Mitsubishi Eclipse GSX
- 1991 - 1992 Mitsubishi Galant VR-4
- Mitsubishi Lancer Evolution I–IX (4G63T-equipped)
- 2003 - 2005 Mitsubishi Lancer Evolution VIII
- 2006 Mitsubishi Lancer Evolution IX
- 1990 - 1998 Eagle Talon TSi AWD
- 1990 - 1994 Plymouth Laser RS Turbo
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
