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Stemco · Brakes & Wheel End
MK72700S
In stock · ships from Knoxville
This is a Stemco MK42700S automatic brake slack adjuster (ABA), alternatively referred to under part number MK72700S by some suppliers.
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Verified fitment for 2 applications
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All confirmed applications for this part number.
Other applications
Other applications
This is a standard automatic slack adjuster designed to fit most heavy-duty trailers and trucks with a 1.5-inch, 28-spline camshaft. It is a straight clevis type with a 5.5-inch arm length and 5/8-18 inch clevis thread. The fitment is based on component specifications, not specific vehicle makes or models.
Part data verified against 3 catalog sources
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It is a heavy-duty component that automatically maintains the proper clearance between the brake shoes and the brake drum on air-braked trucks and trailers. By eliminating the need for manual brake adjustments, it ensures consistent, even braking performance across all wheel positions and prevents uneven wear. Drivers and mechanics can easily verify the brake stroke during pre-trip inspections thanks to the built-in Auto-Check™ stroke indicator, which helps ensure compliance with DOT roadside safety checks.
Part Number: MK72700S
AUTO SLACK ADJUSTER
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
