Oversized Tube and Fin Core: This BladeRunner Street Series Radiator features a 2-3/4″ thick tube and fin core which provides greater heat dissipation and better coolant flow than the factory radiator for optimum cooling efficiency. The fabricated end tanks are constructed out of 1/8″ aluminum plates for strength and durability. Billet aluminum inlet and outlet for long-lasting reliability. 100% TIG-welded for proven strength and durability. BladeRunner Street Series Radiators include a brass drain valve with fitting to easily connect a hose for draining coolant. Utilizes the factory mounting locations to provide stability for a hassle-free installation. Brushed aluminum finish with an aFe POWER logo painted on the front. When it comes to engineering for power, performance, protection and value, aFe POWER is the only choice. BladeRunner Street Series Aluminum Radiator GM Diesel Trucks 03-05 V8-6.6L (td) LB7/LLY Fitment: Chevrolet Silverado 2500 HD Base 2001 to 2005 Chevrolet Silverado 2500 HD LS 2001 to 2005 Chevrolet Silverado 2500 HD LT 2001 to 2005 Chevrolet Silverado 2500 HD WT 2004 to 2005 Chevrolet Silverado 3500 Base 2001 to 2005 Chevrolet Silverado 3500 LS 2001 to 2005 Chevrolet Silverado 3500 LT 2001 to 2005 Chevrolet Silverado 3500 WT 2004 GMC Sierra 2500 HD Base 2002 to 2005 GMC Sierra 2500 HD SL 2001 to 2002 GMC Sierra 2500 HD SLE 2001 to 2005 GMC Sierra 2500 HD SLT 2001 to 2005 GMC Sierra 2500 HD WT 2003 to 2005 GMC Sierra 3500 Base 2002 to 2005 GMC Sierra 3500 SL 2001 to 2002 GMC Sierra 3500 SLE 2001 to 2005 GMC Sierra 3500 SLT 2001 to 2005 GMC Sierra 3500 WT 2004 to 2005