Mishimoto MMRAD-CON-99 Performance Aluminum Radiator for BMW Z3 99-02 with Manual Transmission Direct fit for 1999-2002 BMW Z3 Overall Size: 25.71 x 18.43 x 2.9 / Core Size: 21.57 x 17.09 / Rows: 2 Inlet & Outlet: 1.5 / Core Thickness: 2.4 / Tank Wall Thickness: 0.08 All-aluminum construction includes magnetic drain plug Mishimoto Lifetime Warranty Drain plug thread length: .47 inch Drain plug thread size: M12 x 1.5 Tank wall thickness: .08 inch Outlet: 1.50 inch Inlet: 1.50 inch