BMW e46 EGR emissions air pump Control Valve OEM exhaust gas recirculation EGR (Exhaust Gas Recirculation) Valve BMW part# 11 72 7 553 063, by PIERBURG (OEM). These get stuck and cause Check Engine Light, poor running, and poor emissions. Easily fouled spark plugs are another symptom. Please NOTE mid-year split on PRODUCTION date for late cars. Check the fitment chart BELOW, email us your VIN.