Mishimoto MMRAD-IS300-01 Lexus IS300 Performance Aluminum Radiator, 2001-2005, Silver Direct fit for the 20012005 Lexus IS300 3.0L Overall Size: 29.1 x 19.9 x 1.92 / Core Size: 14.76 x 27.87 / Rows: 2 Inlet & Outlet: 1.4 / Core Thickness: 1.42 / Tank Wall Thickness: 0.08 All-aluminum construction includes high-pressure rad cap and magnetic drain plug Mishimoto Lifetime Warranty. Fill neck: 0.12 inch Overall size: 29.1 inch x 19.9 inch x 3.8 inch; core size: 14.76 inch  27.87 Inlet: 1.4 inch; outlet: 1.4 inch Core thickness: 1.42 inch; tank wall thickness: .08 inch Drain plug thread size: (M16) .06 inch; drain plug thread length: .047 inch Limited lifetime warranty