The Mack 8MY331A Rubber Steering Column Boot is a new old stock (NOS) replacement part specifically designed for Mack DM, R, RB, and RD trucks. Made by the trusted brand Mack, this boot is designed to fit snugly around the steering column to provide protection and a secure seal. Ideal for maintaining the functionality of your commercial truck, this high-quality rubber boot is a reliable and durable component that ensures smooth and precise steering performance.