GSC +0.001" Exhaust Valve Guide w/ Stopper – Toyota G16E-GTS – GSC3147.001-1
Oversized Exhaust Valve Guide for G16E-GTS Cylinder Heads
The GSC Power-Division +0.001" Exhaust Valve Guide is engineered for Toyota G16E-GTS engines requiring tighter tolerances or freshly machined ports. Designed with a 5.5mm valve stem fitment and a stopper-style profile, this guide ensures secure seating and helps prevent valve guide movement under high-RPM conditions.
Fitment and Compatibility
Sold individually. A full exhaust-side setup requires 6 guides. Standard and +0.003" oversized options are also available to suit your build’s tolerance needs.
Key Features
- +0.001" oversized fit for precision-machined heads
- Stopper-style design for fast install and anti-drop protection
- Precision-machined for 5.5mm valve stems
Specifications
| Stem Diameter | Total Length | Outer Diameter | Protrusion Height |
|---|---|---|---|
| 5.5mm / 0.2165" | 47mm / 1.850" | 10.34mm / 0.407" | 13.08mm / 0.515" |
Fitment:
- 2021–2025 Toyota GR Corolla 1.6L Turbo Inline-3 (G16E-GTS)
- 2020–2025 Toyota GR Yaris 1.6L Turbo Inline-3 (G16E-GTS, international markets)
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