The 5.5" Lever 10 Splines 1.5" Dia Automatic Slack Adjuster by Torque is a direct replacement part for commercial trucks, specifically designed for Mack & Volvo models. It comes with a 1-year manufacturer warranty and has interchange part numbers such as ACCURIDE Gunite SA02401 and AS1132. The automatic slack adjuster features a durable construction and is reliable in maintaining proper brake function on the road. Made by a trusted brand like Torque, this product ensures quality and performance for your vehicle.