Radiators

Prevent catastrophic overheating, permanently eliminate cracked plastic end tanks, and drastically increase your engine's cooling capacity on your 2006–2007 Chevy Silverado or GMC Sierra 2500HD/3500HD with our selection of LBZ Duramax radiators. The factory radiator on the 6.6L LBZ utilizes a cheap plastic-to-aluminum crimped design that is notorious for splitting at the seams when subjected to extreme under-hood heat, aggressive aftermarket tuning, or heavy fifth-wheel towing. When a factory radiator fails, it immediately drains your engine of vital coolant, leaving you stranded on the side of the road and exposing your cylinder heads to severe damage. Upgrading to a heavy-duty, fully TIG-welded all-aluminum radiator provides a permanent, bulletproof solution that will absolutely not burst under pressure. These high-performance radiators feature significantly thicker cores and increased fluid capacities to keep your coolant temperatures in check during the most grueling towing conditions. Whether you need a direct OEM-style replacement to get your truck back on the road or a massive aluminum upgrade to handle increased horsepower, we have the exact hardware you need. We proudly supply industry-leading cooling solutions from trusted brands like Mishimoto, aFe Power, Cold Case, and XDP. Browse our complete inventory of 6.6L LBZ radiators below to lock in safe operating temperatures and protect your Duramax.