The Role of Heavy-Duty EGR Coolers in Diesel Engine Performance Heavy-duty EGR coolers are essential for maintaining diesel engine efficiency and meeting emissions standards. By cooling exhaust gases before recirculation, they help reduce NOx emissions, improve combustion efficiency, and protect the engine from overheating. Discover why investing in a reliable EGR cooler is a smart move for performance and compliance. Read more at https://truckacparts.wordpress.com/2025/09/30/the-role-of-heavy-duty-egr-coolers-in-diesel-engine-performance/ #egrcoolers #heavydutyparts #truckparts #automotiveguide