Radiator Cap

The Lexus Radiator Cap Sub-Assembly, part number 16401-31650, is a genuine OEM replacement designed to restore the proper function of your vehicle's cooling system. This component is officially referred to as a Cap Sub-Assy, Radiator and is also commonly known as a Radiator Cap. It is manufactured by Lexus to meet strict factory specifications, ensuring reliable performance and durability. This radiator cap replaces previous part numbers 16401-5B630 and 16401-75440. It features a direct replacement fitment type, making installation straightforward for compatible vehicles. The specifications include dimensions of 2.7 x 2.7 x 2.8 inches and a weight of 1.50 Pounds. This genuine Lexus part is guaranteed by the Lexus factory warranty. It is specifically designed to fit various Lexus models including the GS300 (2006), GS350 (2007-2011), GS430 (2006-2007), GS450h (2007-2011), GS460 (2008-2011), GX470 (2003-2009), IS250 (2006-2012), and IS350 (2006-2012). Please ensure your vehicle's year, model, and engine specifications match the listed fitment to guarantee compatibility.