GSC Intake Valve Guide – +0.001" Oversize Single for Mitsubishi 4G63T – GSC3002.001-1
GSC Power-Division’s smooth-style intake valve guide is engineered for Mitsubishi 4G63T engines, offering precision fitment and reliable performance. This +0.001" oversized guide is ideal for builds requiring tighter clearances and enhanced valve control under high heat and boost.
Standard-size guides are available individually or in sets of 8. Oversized options (+0.001" and +0.003") are sold individually to support custom machining and performance tuning.
GSC3002 Standard Dimensions:
- Total Length: 1.670 in / 42.42 mm
- Outer Diameter: 0.4750 in / 12.07 mm
- Valve Stem Diameter: 6.6 mm
Perfect for DSM rebuilds, Evo upgrades, or valvetrain refreshes, this guide delivers smooth valve motion and long-term durability in turbocharged applications.
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

