Shop Buick Century Exhaust Gas Recirculation (EGR) Valve. 2.0 liter. 4 CYLINDER 2.4 LITER. All Models; 2 Liter, EMISSION - OEM Buick Part # 4287821 (04287821)

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 Breeze, Cirrus, Stratus

2.0 liter. 4 CYLINDER 2.4 LITER. All Models; 2.0L.
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.