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Automann · Brakes & Wheel End
139.2837
In stock · ships from Knoxville
The Automann 139.2837 is an automatic slack adjuster designed as a direct replacement for Meritor-type air brake systems on heavy-duty trucks and trailers.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
It automatically adjusts brake clearance as the brake linings wear, maintaining consistent braking performance and reducing the need for manual adjustments. This unit features a 6-inch arm length with a fine spline connection, and is commonly replaced when a slack adjuster is worn, damaged, or fails to maintain proper stroke. Always verify the correct arm length, spline type, and mounting orientation for your specific axle and brake chamber configuration.
Part Number: 139.2837
MERITOR SLACK ADJUSTER
Vendor: Automann
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
