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SKU: 2073-8
GSC P-D Toyota 3S-GTE 23-8N Chrome Polished Exhaust Valve - 30mm Head (+1mm) - SET 8 for 1990-1999 Celica & MR2 Turbo
GSC Power-Division exhaust valves deliver reliable performance for Toyota 3S-GTE engines in 1990-1999 Celica ST185/ST205 Turbo 4WD and MR2 Turbo SW20 models. The 30mm head diameter provides 1mm over stock size to improve exhaust flow and engine breathing for noticeable power gains. Chrome polished stems ensure long-lasting durability under high heat and stress conditions.
Key Features
- 30mm Head Diameter (+1mm): Boosts exhaust flow for better cylinder scavenging and increased horsepower output
- Chrome Polished Stem: Resists guide wear and extends valve life several times longer than stock finishes
- One-Piece Forged Design: Delivers strength to handle high RPM and boost levels without failure
- 101.23mm Overall Length: Matches 3S-GTE specs for drop-in compatibility after proper machining
- 8mm Stem Diameter: Provides precise fit with stock guides and seals for reliable sealing
Product Notes
- Valve seats require machining to accommodate +1mm oversized head diameter
- Inspect valve springs and retainers during replacement for full valvetrain reliability
- Packaged in protective box to prevent damage during transit
Installation Notes
- Professional installation recommended.
- Machine valve seats to match 30mm head prior to installation
- Compatible with stock GSC recommended valve springs and titanium retainers
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1990-1993 | Toyota | Celica | ST185 Turbo 4WD |
| 1994-1999 | Toyota | Celica | ST205 Turbo 4WD |
| 1990-1999 | Toyota | MR2 | SW20 Turbo |
Why Choose GSC Power-Division?
- Proven in racing applications with thousands of race wins
- Advanced heat-resistant materials built for turbocharged endurance
- Made to exact OEM tolerances with enhanced performance geometry
Frequently Asked Questions
-
Q: Do these fit all 3S-GTE engines in Celica and MR2 Turbo?
A: Yes they match 1990-1999 ST185/ST205 Celica Turbo 4WD and SW20 MR2 Turbo 3S-GTE cylinder heads perfectly after seat machining -
Q: What makes the chrome polished finish different?
A: Chrome polishing on the 8mm stem reduces friction dramatically lowers wear on guides and supports high boost longevity -
Q: What warranty coverage applies?
A: Lifetime warranty against stem breakage when installed and maintained properly by certified engine builder
Shipping & Handling
- Method: Standard Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective box 6x4x2 inches
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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