The product is a Genuine Infiniti 3.5L A/C Idler Pulley Bracket Tensioner Assembly specifically designed for models from 2003 to 2008. This tensioner assembly is a direct fit for Infiniti vehicles and comes with a manufacturer warranty of 30 days. Made in Japan, this OE/OEM part number 11925-AG30A replaces superseded part numbers 11925-4W000 and 11925-AG300, providing a reliable and high-quality replacement for your vehicle's tensioner assembly.