The Perrin turbo sump restrictor is a black service component for turbocharged Subaru models, including 2018–2024 WRX, 2020–2025 Legacy, Outback and Ascent, and 2017–2018 Forester XT. It serves as a direct-fit replacement for the turbo sump restrictor assembly on supported models and is intended for maintenance or repair of the turbo sump system on those Subaru platforms.
PERRIN 18-26 Subaru WRX / 20-25 LGT/OBXT/Ascent / 17-18 Forester XT Turbo Sump Restrictor - Black