Shop 1990 Buick Century Exhaust Gas Recirculation (EGR) Valve. 3.5 LITER. 4.0 LITER. All Models; 4.0L LITER, Emission, Make - OEM Buick Part # 4593888AC (04593888AC, 4593888AA)

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.

EGR Valve

Fits Avenger, Grand Caravan, Journey, NITRO, Pacifica, Sebring, Town & Country

3.5 LITER. 4.0 LITER. All Models; 4.0L. Convertible, 3.5 LITER. Journey; 3.5L. Nitro; 4.0L. Pacifica; 4.0L. Sebring, Avenger; 3.5L. Sedan, 3.5 LITER.
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.