Subaru EJ Turbo Blanket (COBB part number 821655) is a direct-fit turbo blanket for supported Subaru turbocharged EJ-engine platforms. Designed to insulate the turbocharger turbine housing, limit underhood heat transfer, and reduce heat soak.
Manufacturer-confirmed USDM applications: 2002–2014 Subaru Impreza WRX (sedan and wagon/hatch as applicable); 2004–2014 Subaru Impreza WRX STI; 2009–2010 Subaru Impreza 2.5 GT; 2004–2013 Subaru Forester XT; 2005–2009 Subaru Legacy GT / GT Spec.B; 2005–2009 Subaru Outback XT; and 2015–2021 Subaru WRX STI (EJ engine).
Compatibility restrictions: Turbocharged EJ engines only. Not for the FA-powered 2015–2021 WRX, 2022+ WRX, or 2014+ Forester XT. Do not assume fitment on aftermarket turbocharger housings; check physical clearance and turbo configuration before ordering. Special-edition trims not listed by COBB require confirmation.
Emissions: COBB classifies this item as a non-emissions-related part. Manufacturer fitment and product source: COBB 821655.
