Perrin Firewall Grommet 1.4in - 2015-2021 Subaru WRX / STI PDM_differentials Carbon fiber just adds a

Carbon fiber just adds a cleaner and more pronounced look that will complement the exterior of your vehicle and will work well with any other exterior alterations you have on your vehicle such as canards

mounting points

Note that a post-pump fuel filter is still required

These are made using mandrel-bent aluminum construction to deliver a fast and smooth transition in boost

32-level damping adjustment

Perrin Firewall Grommet 1.4in - 2015-2021 Subaru WRX / STI PDM_differentials Carbon fiber just adds aPerrin Firewall Grommet Sound Generator Plug 2015 2021 Subaru WRX STI Features: Simplifies cable management between interior and engine bay Protects wires from metal wear and damage Can plug hole from STI sound generator removal Improves engine bay appearance with a clean finish Fits in two locations; consider buying two Supports clean installation of PERRIN gauges Prevents wire damage from sharp metal edges Provides additional routing option away