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PROSA56211
This is an automatic slack adjuster for air brake systems on heavy-duty trucks and trailers. It automatically maintains the correct clearance between the brake shoes and drum as the brake linings wear, which helps keep braking consistent and reduces the need for manual adjustments. You would replace a slack adjuster if it is seized, has excessive free play, or is no longer adjusting properly. This model has a straight arm, a 1.5-inch diameter spline with 28 teeth, and a 5.5-inch stroke length.
Designed as an aftermarket replacement in the Haldex style. Confirmed cross-reference to Navistar FLT40010211. Suitable for many standard heavy-duty truck and trailer axle configurations requiring a 1.5-inch, 28-spline automatic slack adjuster with a 5.5-inch stroke and straight arm.
Part Number: PROSA56211
HALDEX 1.50 - 28SPL - 5.5 SLACK ADJUSTER
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
