GSC Stopper Style Exhaust Valve Guide – Subaru FA20 WRX / BRZ (GSC3105)
Precision Exhaust Valve Guide for FA20 Engines
The GSC Power-Division Stopper Style Exhaust Valve Guide is engineered for Subaru FA20 engines found in WRX and BRZ platforms. Designed to support high-performance builds, this guide features a stopper-style profile for secure valve seating and consistent alignment under demanding conditions.
Sold Individually – Standard Size
This listing includes one standard-size exhaust valve guide. Also available in sets of 8. For cylinder heads requiring tighter tolerances, oversized options (+0.001" and +0.003") are sold separately.
Technical Specifications
- Part Number: GSC3105
- Total Length: 1.456" / 36.98mm
- Outer Diameter: 0.3964" / 10.07mm
- Valve Stem Diameter: 5.5mm
Fitment Guide
- 2015–2021 Subaru WRX 2.0L Turbo (FA20DIT)
- 2013–2020 Subaru BRZ 2.0L NA (FA20)
- 2013–2020 Scion FR-S / Toyota 86 2.0L NA (FA20)
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
