The 40020211 Haldex S-ABA automatic slack adjuster is a rugged, clearance-sensing model built for heavy-duty trailer applications. It features a 1½″ × 28 spline shaft, a 5.5″ arm length, and a plate-style anchor bracket. With a self-setting design and sealed internals, it offers high torque capacity (up to 26,550 in-lb) and reliable brake clearance control, making it ideal for demanding, low-maintenance fleet environments.
