Buy 2021 Subaru Legacy Gasket Air Intake Duct. Intercooler If your 2021 Subaru Legacy is equipped Intercooler - OEM Subaru Part # 14497AA040

GASKET-AIR INTAKE DUCT Engine Air Intake Hose Seal

Fits Ascent, Forester, Legacy, Outback, WRX

Intercooler
If your 2021 Subaru Legacy is equipped with a turbo and you've noticed a reduction in acceleration or a hissing on acceleration accompanying your check engine light, your intercooler or its piping/tubes may need to be repaired or replaced.