GrimmSpeed Sound Generator Plug Kit
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GrimmSpeed Sound Generator Plug Kit - Subaru WRX STI (VAB) MY15-17
GrimmSpeed builds practical, well engineered solutions for cleaning up cluttered engine bays without sacrificing function. This billet aluminium plug replaces the factory sound generator setup on your Subaru WRX STI, eliminating the artificial cabin drone while sealing the intake tract properly.
This listing covers the Subaru WRX STI (VAB) built MY2015-17, finished in black anodised aluminium with a laser-etched GrimmSpeed logo.
Note: This plug is a direct fit for MY15-17 STI only, as other model years do not use the OE sound generator tube.
Kit Contents
- 6061 billet aluminium plug, black anodised finish
- Laser-etched GrimmSpeed logo
- Breeze hose clamp (replaces factory spring clamp)
- Rubber cap for firewall side
- No modification required for installation
Vehicle compatibility and fitment notes are provided in the tabs above. Please confirm your STI's build date before ordering.
Not sure if this kit suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| Subaru | WRX STI | VAB | EJ257 |
Technical Specifications
| Spec | Value |
|---|---|
| Material | 6061 billet aluminium |
| Finish | Anodized, laser-etched (black or red) |
| Included Hardware | Breeze hose clamp, rubber firewall cap |
| Fitment | Direct fit for post-MAF hose, 2015-17 Subaru WRX STI (VAB) only |
No instructions available for this product.

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