Slack Adjusters
140 ProductsBrake & Wheel End Brake & Wheel End Categories (22)
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Auto Slack Adjuster AS1140 1-1/2-28 X 5-1/2" 138.2810 Automatic Slack Adjuster AS1140 1-1/2-28 Spline, 5-1/2" Arm. Same As Midwest WAAS1140, Sirco SA1140, BWP R-1140, Automann 138.2810, Midwest WAAS1140,...
- Regular price
- $72.99
- Sale price
- $72.99
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Auto Slack Adjuster AS1141 1-1/2-28 X 6" 138.2830 Automatic Slack Adjuster AS11411-1/2-28 Spline, 6" Arm. Same As Midwest WAAS1141, Sirco SA1141, Automann 138.2830, Gunite AS1141, Gunite AS1001, Fleetcraft...
- Regular price
- $65.99
- Sale price
- $65.99
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Auto Slack Adjuster AS1144 1-5/8-37 X 6" 138.3741 Automatic Slack Adjuster AS11441-5/8-37 Spline, 6" Arm. Same As Sirco SA1144, Automann 138.3741, Gunite AS1144, Dayton 05-764, Gunite AS1002, Gunite...
- Regular price
- $79.99
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- $79.99
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Auto Slack Adjuster AS1150 1-1/2-28 X 6" 138.2832 Automatic Slack Adjuster AS11501-1/2"-28 6" Trailer. Same As Automann 138.2832, Sirco SA1150, Gunite AS1150, Hendrickson S-21398-2.
- Regular price
- $79.99
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- $79.99
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Auto Slack Adjuster AS1168 1-1/2-10 X 5-1/2" 138.1011FC Auto Slack Adjuster 138.1011FCFor Welded Clevis Chamber. 1-1/2-10 Spline, 5-1/2 Arm. Same As Automann 138.1011FC, Gunite AS1168, Mack 25QD419, Euclid...
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- $79.99
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- $79.99
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Auto Slack Adjuster AS1169 1-1/2-10 X 6" 138.1030FC Auto Slack Adjuster 138.1030FCFor Welded Clevis Chamber. 1-1/2-10 Spline, 6 Arm. Same As Automann 138.1030FC, Gunite AS1169, Mack 25QD419P3, Euclid...
- Regular price
- $79.99
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- $79.99
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Auto Slack Adjuster AS1170 1-1/4-10 X 5-1/2" 138.1010FC Auto Slack Adjuster 138.1010FCFor Welded Clevis Chamber. 1-1/4-10 Spline, 5-1/2 Arm. Same As Automann 138.1010FC, Gunite AS1170, Gunite SA11702, Volvo...
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- $79.99
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- $79.99
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Auto Slack Adjuster AS1171 1-1/4-24 X 5-1/2" 138.2410FC Auto Slack Adjuster 138.2410FCFor Welded Clevis Chamber. 1-1/4-24 Spline, 5-1/2 Arm. Same As Automann 138.2410FC, Gunite AS1171, Euclid E15054, Euclid...
- Regular price
- $79.99
- Sale price
- $79.99
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Auto Slack Adjuster AS1172 1-1/2-28 X 5-1/2" 138.2810FC Auto Slack Adjuster 138.2810FCFor Welded Chamber Clevis. 1-1/2-28 Spline, 5-1/2 Arm. Same As Automann 138.2810FC, Gunite AS1172, Gunite SA11902, Volvo...
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- $79.99
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- $79.99
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Auto Slack Adjuster AS1173 1-1/2-28 X 6" 138.2830FC Auto Slack Adjuster 138.2830FCFor Welded Clevis Chamber. 1-1/2-28 Spline, 6 Arm. Same As Automann 138.2830FC, Gunite AS1173, Gunite SA11903, Mack...
- Regular price
- $79.99
- Sale price
- $79.99
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Auto Slack Adjuster AS1174 1-1/2-10 X 6.5" 138.1031FC Auto Slack Adjuster 138.1031FCFor Welded Clevis Chamber. 1-1/2-10 Spline, 6-1/2 Arm. Same As Automann 138.1031FC, Gunite AS1174, Euclid E15057, Euclid...
- Regular price
- $79.99
- Sale price
- $79.99
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Auto Slack Adjuster AS1175 1-1/2-28 X 6.5" 138.2831FC Auto Slack Adjuster 138.2831FCFor Welded Clevis Chamber. 1-1/2-28 Spline, 6-1/2 Arm. Same As Automann 138.2831FC, Gunite AS1175, Euclid E15058, Euclid...
- Regular price
- $79.99
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- $79.99
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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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