20012005 Chevrolet/GMC Truck Duramax Diesel 6.6L Aluminum Performance Radiator. These COLDCASE radiators are Tig welded 100 percent aluminum and absolutely beautiful. Don't buy a 3 or 4 row aluminum radiator! It doesn't cool as good as these oversize 2 row models.
Details:

• 100 percent TIG welded
• All Aluminum
• Polished tanks
• 16 fins per inch
• Corrugated fins that give more surface area and more thermal transfer
• Pressure tested
• Direct fitment for all 0105 Duramax 6.6L

Radiator Specs

• Core Height 19.2 inch
• Core Width 34 inch
• Overall Height 20.85 inch
• Overall Width 42.5 inch bolt holes
• Overall Thickness 3 inch
• Tubes (2) 1 inch Tubes