GSC 4G63 Exhaust Valve Guides (3001)

The GSC Power-Division traditional-style smooth exhaust valve guides for 4G63 Evo and DSM. Standard sized guides are sold as set of 8 or individually. Oversized +0.001" and +0.003" options are sold individually. Please double-check your purchase and quantities.

Vehicle Fitment:
Mitsubishi 4G63
1992-2006 Evolution I-IX
1990-1999 Eclipse GST/GSX
1990-1998 Talon TSi
1990-1994 Laser RS
1991-1992 Galant VR4

Specs:
Total Length: 1.950" / 49.53mm
Outer Diameter: 0.4750" / 12.07mm
Valve Stem Diameter: 6.6mm

More Info:
GSC Power-Division valve guides are made from a proprietary blend of Manganese Bronze and turned on dedicated precision CNC turning centers. With performance and aftermarket installation in mind, we hold extremely tight tolerances on through-hole concentricity to outside diameter which minimizes the required honing time for the installer. True-to-size outside diameters minimize honing of guide bosses on cylinder heads that don't require boss service. Our guides are easier to install and shaped to improve air flow instead of just copying OEM design.

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