The Mishimoto aluminum radiator for 2001–2005 Lexus IS300 manual-transmission models is a direct-fit replacement offering a two-row, 1.42-inch-thick brazed aluminum core, TIG-welded end tanks and increased fluid capacity for improved heat dissipation. Designed as an OE-replacement upgrade, it delivers roughly a 30% cooling increase over stock and includes a high-pressure radiator cap.
Mishimoto 01-05 Lexus IS300 Manual Aluminum Radiator