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SKU: 3005.003-1
GSC Power-Division 4G63 Manganese Bronze Exhaust Valve Guide Shorty Stopper .003in Oversize - 1990-1999 Eclipse GST/GSX Talon TSi - SINGLE
GSC Power-Division manganese bronze exhaust valve guide delivers precise fit for 4G63 engines in 1990-1999 DSM vehicles including Mitsubishi Eclipse GST/GSX and Eagle Talon TSi. The .003in oversize shorty stopper corrects guide wear and sets exact depth to support high-rpm turbo builds. This single guide withstands exhaust-side heat and pressure for consistent valvetrain operation.
Key Features
- Manganese Bronze Material: Heat-resistant alloy reduces friction and resists wear in turbocharged exhaust applications
- .003in Oversize: Fits cylinder heads after reaming or pairs with larger stem valves for custom setups
- Shorty Stopper Design: Integrated lip controls insertion depth to maintain valve-to-seat alignment
- 4G63 Specific: Direct replacement for 6-bolt and 7-bolt heads in DSM platforms
- Single Unit Packaging: Allows exact quantity purchase for partial or full cylinder head rebuilds
Product Notes
- Sold as single guide. most 4G63 heads require 4 exhaust guides
- Inspect head for proper guide clearance before installation
- Protective sleeve packaging prevents shipping damage
Installation Notes
- Professional installation recommended.
- Machine head bore to .003in oversize using dedicated reamer
- Press with valve guide driver tool. compatible with frozen or knurled guides
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1990-1994 | Mitsubishi | Eclipse | GST |
| 1990-1994 | Mitsubishi | Eclipse | GSX |
| 1995-1999 | Mitsubishi | Eclipse | GST |
| 1995-1999 | Mitsubishi | Eclipse | GSX |
| 1990-1994 | Eagle | Talon | TSi |
| 1995-1998 | Eagle | Talon | TSi |
| 1990-1994 | Plymouth | Laser | RS Turbo |
Why Choose GSC Power-Division?
- Engineered for DSM racers with real-world track testing
- USA-made components with tight tolerances for repeatable results
- Valvetrain specialists supporting 4G63 builds worldwide
Frequently Asked Questions
-
Q: Will this fit 1G and 2G 4G63 turbo engines?
A: Yes, works in both 6-bolt 1990-1992 and 7-bolt 1993-1999 4G63 heads -
Q: Why manganese bronze for exhaust guides?
A: Provides thermal conductivity and abrasion resistance under hot exhaust gas and valve sealing loads -
Q: What tools are needed for install?
A: Valve guide reamer, press driver and snap ring pliers for stopper alignment
Shipping & Handling
- Method: UPS Ground or USPS Priority Mail
- Availability: In stock - ships same or next business day
- Packaging: Protective sleeve in 4x3x1 inch box
- Weight: 0.1 lbs
GSC Power Division
GSC Power Division is a manufacturer of precision-engineered camshafts, valve springs, and valvetrain components designed for high-performance and competition engines across domestic, import, and diesel platforms. Founded by engineers with deep roots in motorsport, GSC Power Division components are machined to exacting tolerances and heat-treated to survive the demands of forced induction and high-rpm applications that destroy stock valvetrain parts. The brand is particularly well-known in the Mitsubishi Evo, Subaru STI, Nissan RB, and Toyota 2JZ communities where aggressive camshaft profiles are essential for extracting maximum power from turbocharged four-cylinder and six-cylinder engines. Whether building for drag racing, road course competition, or a high-powered street car, GSC Power Division camshafts and valve springs are a proven upgrade path. Popular Upgrades GSC Power Division S1, S2, and S3 camshafts are the most popular selections, with each profile offering progressivel...
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Looks pretty nice
Looks pretty nice, pricing was good and the reinforcement is a big plus.
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