Fits: 2001–2005 Chevrolet Silverado 2500 HD 2001–2005 Chevrolet Silverado 3500 2001–2005 GMC Sierra 2500 HD 2001–2005 GMC Sierra 3500 aFe46-52031RadiatorsOversized 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. End Tanks: The fabricated end tanks are constructed out of 1/8" aluminum plates for strength and durability. Billet Aluminum Inlet/Outlet: Billet aluminum inlet and outlet for long-lasting reliability. TIG-Welded: 100% TIG-welded for proven strength and durability. Brass Drain Valve: BladeRunner Street Series Radiators include a brass drain valve with fitting to easily connect a hose for draining coolant. Perfect Fit: Utilizes the factory mounting locations to provide stability for a hassle-free installation. Custom Appearance: 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.Keep your vehicle running cool with aFe BladeRunner Street Series radiators. These radiators are built from aircraft grade aluminum for superior strength. A larger tube and fin core maintains cooler temperatures over a longer range of time, and the fabricated end tanks are constructed from 1/8 in. aluminum plates for strength and durability. The inlet/outlet uses billet aluminum for long-lasting reliability. aFe BladeRunner Street Series radiators include a brass drain valve and utilize the factory mounting locations for a hassle-free installation.