EGR coolers for Class 7 and Class 8 trucks are components in the emission control system, helping to reduce nitrogen oxide emissions by cooling exhaust gases before they are recirculated into the engine. These coolers are designed to handle the high heat generated by the exhaust, preventing engine overheating and improving overall efficiency. EGR coolers come in various configurations to fit different truck models and ensure optimal temperature control in heavy-duty applications. By maintaining proper exhaust gas temperatures, these coolers play a crucial role in enhancing engine performance and compliance with emission standards.