The full aluminum radiator is designed to provide maximum cooling efficiency to prevent premature engine failure. Its lightweight and high heat transferring aluminum features a tube and fin design,that dramatically increases surface area that enables the heat to dissipate more efficiently. This Aluminum Radiator is at least 30%-45% more efficient than stock ones. Why all aluminum radiator is the best purchasing option? The accepted reason is the engine will get revolutionary cooling result than plastic one,all aluminum tank makes highly efficient heat dissipation functionally and no leakages in decent working condition,that means will dramatically increases the engine's power performance and durability. THE RADIATOR SIZE: Core Size: 18-5/8" x 25-1/2" Core Thickness: 1-3/4" Inlet Hose: 1-3/8" Outlet Hose: 1-3/8" includes brass petcock/drain plug FITMENTS: For Toyota Tacoma 2.4 2.7 3.4 V6 L4 GAS Engine 1995-2004