EGR Valve 9678745680 Is A Genuine Peugeot Suitable For Models Such As The 308 508 3008 And 5008

    The EGR valve with part number 9678745680 is suitable for Peugeot models such as the 308, 508, 3008, and 5008. Here is some information on applicable years and engine displacements for these models:
•   Peugeot 308: Taking the 2019 model year as an example, it is available with 1.6L and 1.2T engine options.
•   Peugeot 508: From 2011 to 2014, it used 2.0L and 2.3L naturally aspirated engines; from 2015 to 2016, it had 2.0L naturally aspirated, 1.6T, and 1.8T turbocharged engines; from 2017 onward, all models came with 1.6T and 1.8T engines.
•   Peugeot 3008: The 2018 model had a 2.0L naturally aspirated engine, while the 2019 model came with a 1.6T engine.
•   Peugeot 5008: Common engine options are 1.6T and 1.8T.
The function and role of the EGR valve in a vehicle is to control and regulate the amount of exhaust gas recirculation. When the engine is running, the EGR valve introduces a portion of exhaust gas into the intake side, where it mixes with fresh air and re-enters the combustion chamber. Since exhaust gas contains a large amount of polyatomic gases such as carbon dioxide, which have high heat capacity, it can absorb a significant amount of heat in the combustion chamber, lowering the maximum combustion temperature of the air-fuel mixture. This reduces the formation of nitrogen oxides, helping to lower engine exhaust emissions. At the same time, the EGR valve can also improve fuel economy and engine performance to a certain extent. For example, at low load, introducing less exhaust gas can increase power output; at high load, introducing more exhaust gas helps reduce combustion temperature and the possibility of engine knock.