GSC +1mm Standard Intake Valve – Toyota 2JZ-GE / GTE (34.50mm) – GSC2064-01
Oversized Stainless Intake Valve for Toyota 2JZ Engines
The GSC Power-Division +1mm Intake Valve is precision-built for Toyota 2JZ-GE and 2JZ-GTE applications. Featuring a larger 34.50mm head diameter, this valve is crafted from modified 21-4N stainless steel to deliver increased airflow, high heat tolerance, and long-term durability in high-performance builds.
Engineered for Flow, Strength, and Reliability
Using advanced 3D simulation and flow-testing, GSC developed a valve head that maximizes velocity while minimizing distortion. This ensures better sealing under extreme conditions and consistent performance throughout the life of the valve.
Valve Features
- Swirl-polished head improves airflow and combustion efficiency
- Back-cut design reduces valve weight for better high-RPM stability
- Micro-polished stem minimizes oil retention and drag for smoother motion
- Modified 21-4N stainless steel for high heat capacity and durability
- Stelite wafer or hardened tips for extended wear resistance
- Optimized tip height for proper valvetrain geometry and easier valve lash setup
- Balanced keeper groove to reduce spring shim use and enhance spring kit performance
- Compatible with OEM or upgraded keepers/locks (reuse not recommended for performance builds)
Specifications
| Stem Diameter | Overall Length | Head Diameter |
|---|---|---|
| 6mm | 98.40mm | 34.50mm |
Fitment:
- 1993–1998 Toyota Supra 3.0L Twin Turbo DOHC (2JZ-GTE)
- 1993–2002 Toyota Supra 3.0L Non-Turbo DOHC (2JZ-GE)
- 1991–1997 Toyota Aristo 3.0L Twin Turbo DOHC (2JZ-GTE)
- 1992–2004 Toyota Crown / Chaser / Mark II / Cresta 3.0L DOHC (2JZ-GE)
- 1998–2005 Lexus GS300 3.0L DOHC (2JZ-GE)
- 2001–2005 Lexus IS300 3.0L DOHC (2JZ-GE)
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

