GSC +.003" Stopper Style Intake Valve Guide – Subaru FA20 WRX / BRZ (GSC3106.003-1)
Oversized Intake Valve Guide for FA20 Engines
The GSC Power-Division +.003" Stopper Style Intake Valve Guide is engineered for Subaru FA20 engines found in WRX and BRZ platforms. Designed for intake-side use, this guide features a stopper-style profile that ensures secure valve seating and precise alignment—ideal for cylinder heads that have been reworked or require tighter tolerances.
Sold Individually – Oversized +.003"
This listing includes one +.003" oversized intake valve guide. Standard size and +.001" oversized options are also available. Sets of 8 can be purchased separately for full head service.
Technical Specifications
- Part Number: GSC3106.003-1
- Total Length: 1.654" / 42.01mm
- 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)
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