Description: This aluminum radiator is designed to provide maximum cooling efficiency to prevent premature engine failure. Its light-weight, 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 40% more efficient than stock ones. Most importantly, it has a much higher capacity for coolant than stock ones, which means that your cooling system will be more efficient and will be more resistant to temperature surges in racing applications. 100% Brand new and never been used. Made of High Quality Full T-6061 Aluminum Construction Stronger and Higher Capacity for Coolant than Stock Units 26mm Aluminum Radiator Transmission: MT Core Size: 218 x 295 x 26mm (8.58" x 11.61" x 1.02") Inlet/Outlet: 0.79" / 0.79" Direct Bolt-On OE Fitment or Replacement Improves Cooling by 35% to 45% Temperature Professional Installation is Highly Recommended No Instruction Included Package includes: 1X Aluminum Racing Radiator Just as pictures show Fitment: 2001-2005 Yamaha Raptor660 YFM660 Fits Manual Transmission Only For the year and models, please check the compatibility.