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Haldex · Brakes & Wheel End
400-10305
In stock · ships from Knoxville
This is a Haldex automatic slack adjuster for heavy-duty air brake systems.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 2 applications
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All confirmed applications for this part number.
Other applications
Other applications
Designed for 12-1/4 inch trailer brake assemblies. Also used on some truck applications as cross-referenced by Freightliner, Volvo, and Mack part numbers. Verify the camshaft diameter (1.5"), spline count (28), arm length (6"), and anchor bracket style (Plate & Flat Stud) match your axle configuration.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 16 of 20.
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It automatically maintains proper clearance between the brake drum and shoes as the linings wear, typically used on 12-1/4 inch trailer brake assemblies. The self-adjusting mechanism reduces the need for manual adjustments, prevents excessive brake wear, and helps avoid roadside inspection failures. Replace your old or failed slack adjuster to restore safe, consistent braking performance and extend the life of your foundation brake components.
Part Number: 400-10305
HALDEX AUTO SLACK
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
