SKU: 3003-8 | UPC: GSC3003-8
GSC P-D 4G63 Manganese Bronze Exhaust Valve Guide Stopper Style Set 8 1990-2006 Eclipse Talon Evo Lancer
GSC Power-Division Manganese Bronze Exhaust Valve Guide Stoppers in stopper style come as a set of 8 for 4G63 DOHC engines in Mitsubishi Eclipse GST GSX Eagle Talon TSi Plymouth Laser and Lancer Evolution models. These parts replace OEM snap ring guides to lock exhaust valve guides in position preventing movement during extreme heat and RPM. They deliver consistent valve train stability for rebuilt or high performance 4G63 cylinder heads.
Key Features
- Manganese Bronze Material: Provides strong wear resistance and heat dissipation to handle high exhaust temperatures without deformation.
- Stopper Style Design: Secures valve guides against migration into the head ensuring precise valve stem alignment and seal integrity.
- Set of 8 Pieces: Covers all exhaust valves on 4G63 engines for complete valvetrain upgrade in one package.
- Precision CNC Machined: Matches OEM dimensions for drop-in fit reducing installation time and maintaining factory tolerances.
- High Temperature Tolerance: Withstands turbocharged boost levels and track abuse common in DSM and Evo applications.
Product Notes
- Exhaust side only pairs with GSC valve guides or OEM for full setup.
- Inspect cylinder head ports before install to ensure clean surfaces.
- Packaged in foam-lined box for protection during transit.
Installation Notes
- Professional installation recommended.
- Use valve guide driver tool to press stoppers evenly into head.
- Compatible with stock or aftermarket valve guides no additional hardware needed.
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?
- Specializes in 4G63 valvetrain parts proven in drag racing and road course.
- Manufactures in-house with strict material and tolerance standards.
- Engineered for daily drivers and 1000hp builds alike.
Frequently Asked Questions
-
Q: Does this fit 1997 Eclipse GSX 4G63?
A: Yes fits all 1990-1999 Mitsubishi Eclipse GSX GST GS and Spyder GST with DOHC 4G63 engines. -
Q: What is the material and why manganese bronze?
A: Manganese bronze chosen for its hardness corrosion resistance and ability to conduct heat away from valve guides during prolonged high exhaust temps. -
Q: What warranty comes with GSC 3003-8?
A: Limited lifetime warranty against manufacturing defects when installed by certified shop.
Shipping & Handling
- Method: UPS Ground or USPS Priority Mail
- Availability: In stock - ships same or next business day
- Packaging: Protective cardboard box 6 x 4 x 1 inches
- Weight: 0.15 lbs
GSC Power Division
GSC Power Division camshafts and valvetrain parts for turbocharged import engines are stocked at Black Ops Auto Works. Shop camshafts, valve springs, retainers, valves, and head studs engineered for the Toyota 2JZ, Nissan RB26 and VR38DETT, Mitsubishi 4G63, Subaru EJ257 and FA20, and Honda K20 platforms. Every product is filterable by engine code, cam grind, and application so the correct part ships the first time. Black Ops Auto Works carries 407 GSC Power Division SKUs across camshaft, valvetrain, and engine internal categories. What This Brand Covers GSC Power Division is a specialist engine internals brand focused on camshafts, valve springs, retainers, and valves engineered specifically for high output turbocharged import engines. The catalog is built around specific engine codes rather than complete vehicles, which means the same part often applies across multiple chassis that share an engine platform. Brand Focus GSC Power Division designs valvetrain components for engine...
View GSC Power Division Products
Valve Guides
Valve Guides for LS, Hemi, Honda K-series and D-series, Toyota 2JZ, Subaru EJ and FA, Mitsubishi 4G63 and 4B11T, Nissan KA and VQ, BMW, Porsche, and Hyundai applications are stocked at Black Ops Auto Works. Shop bronze valve guides, manganese bronze valve guides, intake guides, exhaust guides, oversize guides, cylinder head rebuild parts, and valvetrain hardware for proven street, drag, road course, and high horsepower engine builds. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 208 valve guide SKUs across the fitments and build levels enthusiasts actually use. What Valve Guides Cover Valve guides locate the valve stem in the cylinder head so the valve seals, moves smoothly, and transfers heat correctly. This collection includes manganese bronze, bronze, standard-size, and oversize guides for performance cylinder head service. Intake and exhaust guide material Material, wall t...
View Valve Guides Products
Valves & Components
Valves and valvetrain components for import, domestic, and performance engine platforms are stocked at Black Ops Auto Works. Shop intake valves, exhaust valves, valve covers, valve cover gaskets, valve guides, valve springs, retainers, valve locks, valve seals, and lash caps for Toyota 2JZ and Supra, Honda K-Series, Nissan RB and SR20, BMW B58 and S58, Subaru FA20, Ford Coyote, and GM LS platforms. Every part is filterable by year, make, model, and engine so builders and tuners can confirm fitment before ordering. Black Ops Auto Works carries 1,391 valvetrain SKUs from proven performance brands. What This Category Covers Valves and valvetrain components manage airflow into and out of the combustion chamber and keep the valvetrain sealed and stable at high RPM. This collection spans intake valves, exhaust valves, valve covers, valve cover gaskets, valve guides, valve springs, retainers, valve locks, valve seals, lash caps, and cam follower shims. Why the Valvetrain Matters for Pe...
View Valves & Components Products


