A simple way to clean your bay. Simplify your 15-17 STI engine bay with The GrimmSpeed Sound Generator Plug Kit. The stock sound generator is an unnecessary system that contributes to a cluttered engine bay and can give an unwanted, artificial sound inside of the car.

The problem with getting rid of this clunky setup is that you're left with a hole in the intake tract. The GrimmSpeed Sound Generator Plug Kit is your solution. This piece is a high quality machined, anodized and laser-etched aluminum plug that is Designed to perfectly contour and Seal inside the stock post-MAF hose on a 15-17 STI.

The outside flange is sized for flush Fitment, making Installation and removal incREDibly easy. Once Installed there is a subtle flash of anodized aluminum with the GrimmSpeed logo visible from all angles.

The plug is available with either a Black or Red anodized finish and laser-etched GS logo for a high-end, premium look in the engine bay and requires no modification to Install. A new Breeze hose clamp is Included to replace the stock spring clamp, along with a cap for the firewall side.

Quick Specs:

• 6061 Billet Aluminum Option of Red or Black anodizing
• Breeze hose clamp and rubber cap Included for a complete Installation
• 100 Percent Engineered, Tested and Manufactured in the USA
• Direct fit for 15-17 STI only (Other STI years do Not have the OE sound generator tube) Install Guide