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SKU: 3001-8
GSC P-D 4G63 Manganese Bronze Exhaust Valve Guide - Set 8 for 1990-2006 Eclipse Talon Lancer Evo Galant Laser
GSC Power-Division manganese bronze exhaust valve guides deliver direct replacement for 4G63 cylinder heads in performance DSM and Evo builds. This set of 8 fits Mitsubishi Eclipse GST GSX Talon TSi Galant VR4 Lancer Evolution Plymouth Laser and more for years 1990-2006. Manganese bronze construction handles extreme heat from turbo exhaust valves while tighter clearances cut oil consumption and seal better under boost.
Key Features
- Manganese Bronze Material: High thermal conductivity dissipates exhaust heat fast to protect valves in turbocharged 4G63 applications
- Tighter Clearances: Reduced stem to guide clearance minimizes oil burning improves ring seal and extends engine life
- Precision Machined: .3735 inch ID x .500 inch OD x 1.378 inch length matches OEM specs with performance tolerances
- Direct OEM Replacement: Drop-in fit for all 4G63 SOHC DOHC heads no modifications needed
- Complete Exhaust Set: 8 guides cover full exhaust side for balanced flow and durability in racing
Product Notes
- Pair with GSC exhaust valves for optimal stem clearance and longevity
- Inspect head for wear before installation
- Packed in protective tube for damage-free delivery
Installation Notes
- Professional installation recommended.
- Hone guides to 0.0015-0.0025 inch clearance for 8mm stems using dedicated 4G63 reamer
- Compatible with factory or ported 4G63 heads no special hardware required
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1990-1998 | Eagle | Talon | TSi |
| 1990-1994 | Mitsubishi | Eclipse | GS |
| 1990-1999 | Mitsubishi | Eclipse | GST |
| 1990-1999 | Mitsubishi | Eclipse | GSX |
| 1996-1999 | Mitsubishi | Eclipse | Spyder GST |
| 1991-1992 | Mitsubishi | Galant | VR-4 |
| 2005-2006 | Mitsubishi | Lancer | Evolution |
| 2005-2006 | Mitsubishi | Lancer | Evolution MR |
| 2005-2006 | Mitsubishi | Lancer | Evolution RS |
| 2006 | Mitsubishi | Lancer | Evolution SE |
| 1990-1994 | Plymouth | Laser | RS |
Why Choose GSC Power-Division?
- Engineered for 4G63 race teams in drag road race and rally
- CNC machined from aerospace grade alloys
- Tested in 40+ psi boost 9000 RPM builds
Frequently Asked Questions
-
Q: Will these fit 2005-2006 Mitsubishi Lancer Evolution IX heads?
A: Yes direct fit for all 4G63 variants including Evo 8 9 Evolution MR RS SE models -
Q: What makes manganese bronze right for exhaust guides?
A: Manganese bronze offers better heat transfer and wear resistance than cast iron holding up to hot exhaust gases and sodium exhaust valves -
Q: What warranty applies?
A: GSC provides warranty against manufacturing defects when installed by certified shop
Shipping & Handling
- Method: Standard ground shipping
- Availability: In stock - ships same or next business day
- Packaging: Secure tube in 6 x 4 x 2 inch box
- Weight: 0.8 lbs
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