Shop 1990 Buick Century Exhaust Gas Recirculation (EGR) Valve. 3.3 & 3.8 LITER, 2004-07. All Models; 3 EMISSION, Year, Repair - OEM Buick Part # 4861635AG (04861635AG, 4861635AF)

Exhaust Gas Recirculation (EGR) Valve.
A Valve used to recirculate small amounts of Exhaust back into the combustion chambers of the engine in order to decrease the combustion temperature, thereby reducing the formation of smog-producing nitrogen oxides. Exc.Mid Model Year Update.

EGR Valve

Fits Caravan, Grand Caravan, Town & Country

3.3 & 3.8 LITER, 2004-07. All Models; 3.3L, 3.8L. All Models; 3.3L, 3.8L; w/o Mid Year Tracking.
EGR Valve - Repair or Replace
A failed EGR valve will often have no noticeable symptoms beyond a check engine light, but it does cause your to operate inefficiently and produce higher emissions. Our technicians have access to manufacturer-approved repair processes and genuine parts.