Keep your classic diesel running cool and dependable with Cooling System Parts for 1982–2000 GM 6.2L & 6.5L Detroit Diesel Engines from Norcal Diesel Performance. These engines are known for longevity, but consistent cooling is essential to protect against overheating, loss of power, and premature wear. Our selection of Alliant Power water pumps helps restore proper coolant circulation for reliable temperature control, while Mishimoto engine coolants and radiator additives are designed to improve heat transfer, reduce corrosion, and maintain stable operating temperatures under daily driving or heavy-duty use. Whether you’re refreshing a high‑mileage work truck or proactively upgrading your cooling system, these proven cooling system components help your 6.2L or 6.5L diesel run cooler, last longer, and perform the way it should to help keep your Chevy or GMC truck on the road.