Performance Polished Aluminum Radiator by Mishimoto. Overall Size: 31.95in x 19.65in x 6.38in. Core Size: 26.55in x 17.00in. Rows: 2. Inlet: 1.375in. Outlet: 1.375in. Tank Wall Thickness: 2.0mm. Core Thickness: 1.96in. Fill Neck ID: 1.50in. Drain Plug Thread Length: 1.5mm. Drain Plug Thread Size: M12. The Mishimoto performance Aluminum radiator is designed and engineered to maximize cooling efficiency, boost engine functions, and most importantly protect your car from overheating. It is the ideal upgrade to your stock radiator. Whether you drive your vehicle daily or take it to the track an upgraded cooling system is essential in maintaining the lifetime of your engine.