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SKU: 2004-8 | UPC: GSC2004-8
GSC P-D 1990-2006 4G63T Evo 1-9 DSM Chrome Polished Intake Valve 35mm Head +1mm Set 8
GSC Power-Division P-D series intake valves provide direct replacement performance for 4G63T engines in Mitsubishi Lancer Evolution 1-9 Eagle Talon Plymouth Laser and DSM Eclipse Galant vehicles from 1990-2006. This set of 8 uses 35mm heads with +1mm length to boost intake airflow and pair with performance cams in turbo setups. Chrome polished stems cut friction forged stainless steel withstands high boost and RPM for reliable power gains.
Key Features
- Chrome Polished Stems: Retains oil for less guide wear and smoother operation during extended high RPM runs
- 35mm Head Diameter: Larger than stock size increases intake airflow for more power across the rev range
- +1mm Valve Length: Matches upgraded valvetrain setups for precise lift and timing control
- One-Piece Forged Design: Provides strength to resist fatigue in turbocharged 4G63T applications
- Swirl Polished Heads: Enhances flow efficiency and reduces turbulence for better cylinder filling
Product Notes
- Valve material is high-strength stainless steel for heat resistance in boosted engines
- Inspect valve guides and seats before installation for proper clearance
- Ships in protective foam-lined box to prevent damage
Installation Notes
- Professional installation recommended.
- Valve stem diameter 6.98mm requires standard 4G63 guides
- No additional hardware needed for direct OEM replacement
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 specifically for import turbo engines like 4G63T with proven track records
- Valvetrain components used in championship-winning DSM and Evo builds
- Precision manufacturing ensures consistent tolerances for reliable performance
Frequently Asked Questions
-
Q: Will these fit Evo 8/9 with stock heads?
A: Yes direct fit for all 4G63T cylinder heads in Evo 1-9 DSM Eclipse Talon Galant and Lancer Evolution models listed -
Q: What finish is on the stems?
A: Chrome polish finish improves oil film strength and reduces wear on guides during high boost operation -
Q: Is valve lashing adjustment needed?
A: +1mm length works with stock or performance cams check lash specs during install for optimal sealing
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Foam protected box 8 x 5 x 2 inches
- Weight: 1.1 lbs
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