PERRIN Bypass Valve
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PERRIN Bypass Valve - Subaru WRX (VAG/VBH/VNH)
PERRIN builds this bypass valve to fix a known weak point on the Subaru WRX turbo system: the factory plastic blow off valve. It's prone to leaking boost pressure over time, which softens throttle response and costs you reliability. The PERRIN BOV swaps that OEM unit for a stronger, more consistent design that holds boost properly and responds faster when you lift off the throttle.
This listing covers the Subaru WRX across the VAG, VBH and VNH chassis, spanning the 2015 to 2021 model years. SKU PSP-TAC-615RD is a direct replacement for the factory unit on these models, no cutting or splicing required.
Key Features
- Direct replacement for the leak prone OEM plastic blow off valve
- Improves boost retention for quicker, more consistent throttle response
- Durable construction built to handle sustained boost pressure
- Bolt-on fitment using existing mounting points
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please confirm your WRX's model year and chassis before ordering.
Not sure if this suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| Subaru | WRX | VAG | - |
| Subaru | WRX | VBH | - |
| Subaru | WRX | VNH | - |
Technical Specifications
| Spec | Value |
|---|
No instructions available for this product.

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