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Slack Adjusters

140 Products
Shop direct-replacement automatic and manual slack adjusters — matched by spline and length, cross-referenced to Haldex and Meritor to pass DOT.

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Slack Adjusters Overview

The slack adjuster is the lever between the brake chamber push-rod and the S-cam; it multiplies force and, in automatic form, maintains proper shoe-to-drum clearance as linings wear. Out-of-adjustment slack adjusters are a top DOT out-of-service item. Van Horn Truck Parts carries automatic and manual slack adjusters cross-referenced to Haldex, Meritor, Bendix, and Automann part numbers.

Match the slack adjuster by spline count and diameter, arm length, and offset, and confirm automatic vs. manual.

Mechanic & Fitment Specs:

  • Types: Automatic, manual
  • Match by: Spline count/diameter, arm length, offset
  • Cross-references: Haldex, Meritor, Bendix, Automann
  • Buying tip: Automatic adjusters still need periodic inspection — don't assume set-and-forget
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