GSC +0.001" Exhaust Valve Guide w/ Stopper Toyota 2JZ-GTE GSC3145.001-1
Oversized Exhaust Valve Guide for 2JZ-GTE & VVTi Engines
The GSC Power-Division +0.001" Exhaust Valve Guide is precision-engineered for Toyota 2JZ-GTE and 2JZ-GTE VVTi cylinder heads requiring tighter tolerances or freshly machined ports. Featuring a 6mm valve stem fitment and a stopper-style profile, this guide ensures secure seating and helps prevent valve guide migration under high-RPM conditions.
Fitment and Compatibility
Sold individually. A complete exhaust setup requires 12 guides. Standard and +0.003" oversized options are also available to match your builds needs.
Key Features
- +0.001" oversized fit for precision-machined heads
- Stopper-style design for quick install and anti-drop protection
- Machined for 6mm valve stems for OEM and performance applications
Specifications
| Stem Diameter | Total Length | Outer Diameter |
|---|---|---|
| 6mm | 38.6mm / 1.52" | 11.04mm / 0.4347" |
Fitment:
- 1993–1998 Toyota Supra Turbo 3.0L DOHC Inline-6 (2JZ-GTE)
- 1997–2005 Toyota Aristo VVTi 3.0L Twin Turbo Inline-6 (2JZ-GTE VVTi, Japan only)
- 1998–2005 Lexus GS300 (2JZ-GTE VVTi swap-compatible)
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