EGR Valve – What It Is and Why It Matters🚗💨🔧🛠️👇 The EGR valve, also known as the Exhaust Gas Recirculation valve, plays an important role in modern vehicle engines. Its main purpose is to reduce harmful exhaust emissions while improving engine efficiency. The EGR valve works by allowing a small amount of exhaust gas to flow back into the engine’s intake manifold. When exhaust gas mixes with fresh air and fuel, it lowers combustion temperature inside the cylinder. This helps reduce the forma