SKU: 1003
GSC P-D Mitsubishi 4G63T Evo 1-9 / 90-98 DSM Valve Keeper (Set of 32)
GSC Power-Division valve keepers secure valves in the 4G63T engine powering Evo 1-9 models and 1990-1998 DSM vehicles including Eclipse GST GSX Talon TSi and Galant VR4. This set of 32 provides reliable retention under high spring pressures for track or street performance builds. Engineered as a direct OEM replacement with enhanced design for demanding RPM ranges.
Key Features
- Larger under-cut angle: Supports higher spring pressures without keepers pulling through retainers
- 7-degree top angle: Creates secure lock onto valve stems for positive retention
- Black nitrided finish: Increases strength fatigue resistance and durability
- Direct replacement design: Compatible with OEM retainers and GSC retainers
- Complete set of 32: Covers all valves in 4G63 DOHC 16-valve heads
Product Notes
- Sold as a matched set of 32 for full engine coverage
- Inspect retainers and springs during installation for compatibility
- Packaged in protective box for safe transit
Installation Notes
- Professional installation recommended.
- Requires complete valve train disassembly and reassembly
- Compatible with stock hardware and aftermarket dual valve springs
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?
- Proven in motorsport valvetrain applications worldwide
- CNC machined from high-strength steel for precision fit
- Designed tested for high-RPM reliability in 4G63 builds
Frequently Asked Questions
-
Q: Will these fit all Evo 1-9 models with 4G63T?
A: Yes covers Evo 1 through 9 including US Lancer Evolution 2005-2006 and JDM variants with DOHC 16-valve heads -
Q: What material and finish are used?
A: Hardened steel construction with black nitride coating for corrosion resistance and extended life -
Q: What is the warranty policy?
A: GSC provides limited lifetime warranty against manufacturing defects when installed by certified professionals
Shipping & Handling
- Method: Standard ground shipping
- Availability: In stock - ships same or next business day
- Packaging: Compact protective box 4 x 4 x 1 inches
- Weight: 0.2 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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