The Mack And Volvo 2011 To 2019 DEF Talk Filler Neck Filter is a reliable and durable solution for restoring functionality to your vehicle's diesel exhaust fluid (DEF) system. With a clip-on attachment method and made from black plastic, this filter is designed to match the fit and function of the original filter on specified vehicles. It measures 7.5 inches long and 1.9 inches wide, making it a practical and direct replacement option. Backed by a team of product experts and over a century of automotive experience, this filter is a trustworthy choice for Mack and Volvo models from 2011 to 2019.