Slack Adjusters
140 ProductsBrake & Wheel End Brake & Wheel End Categories (22)
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Auto Slack Adjuster R801041 1-1/2-10 X 5-1/2" 139.1031 Auto Slack Adjuster R801041 1-1/2-10 Spline, 5-1/2" Arm. Same As Sirco SA1041, BWP M-4043, Automann 139.1031, Keene KR801041, Meritor R801041,...
- Regular price
- $79.99
- Sale price
- $79.99
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Auto Slack Adjuster R801042 1-1/2-10 X 6" 139.1030 Auto Slack Adjuster R8010421-1/2-10 Spline, 6" Arm. Same As BWP M-4044, Automann 139.1030, Keene KR801042, Meritor R801042, Dayton 05-360, BWP...
- Regular price
- $79.99
- Sale price
- $79.99
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Auto Slack Adjuster R801073 1-1/2-28 X 5-1/2" 801073P Auto Slack Adjuster R8010731-1/2-28 Spline, 5-1/2" Arm. Same As Sirco SA1073, Midwest WAR801073, BWP M-4046, Automann 139.2831, Keene KR801073, Meritor...
- Regular price
- $77.99
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- $77.99
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Auto Slack Adjuster R801074 1-1/2-28 X 6" 801074P Auto Slack Adjuster R8010741-1/2-28 Spline, 6" Arm. Same As Sirco SA1074, Midwest WAR801074, BWP M-4047, Automann 139.2830, Keene KR801074, Meritor...
- Regular price
- $79.99
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- $79.99
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Auto Slack Adjuster R801102 1-5/8-37 X 6" 139.3741 Auto Slack Adjuster E-6995A Meritor Style. 1-5/8-37 Spline, 6 Arm, 16-1/2 Fruehauf Trailer. Same As Automann 139.3741, Meritor R801102, Dayton...
- Regular price
- $79.99
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- $79.99
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Auto Slack Adjuster R802446 1-1/2-28 X 5-1/2" 139.2832 1-1/2-28 X 5-1/2. Same As Meritor R802446, Meritor R803048, Dayton 05-3632, Meritor A413275X1144, A41-3275-Z-1144, A35-3275-Z-1144, A353275Z1144, A47-3275-Z-1144, A473275Z1144, Euclid E-11417,...
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- $79.99
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- $79.99
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Auto Slack Adjuster R802447 1-1/2-28 X 5-1/2" 139.2833 1-1/2-28 X 5-1/2. Same As Automann 139.2833, Meritor R802447, Meritor R803049, Dayton 05-3631, Meritor A413275A1145, A35-3275-A-1145, A353275A1145, A41-3275-A-1145, A47-3275-A-1145, A473275A1145,...
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- $79.99
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- $79.99
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Auto Slack Adjuster R802462 1-1/2-28 X 5-1/2" 139.2834 Slack Adjuster 139.2834 BHanded Type B. 1-1/2-28 X 5-1/2. For 30 Disc Brake. Same As Automann 139.2834, Euclid E11419, Euclid...
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- $79.99
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- $79.99
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Auto Slack Adjuster R802463 1-1/2-28 X 5-1/2" 139.2835 Slack Adjuster 139.2835 AHanded Type A. 1-1/2-28 X 5-1/2. For 30 Disc Brake. Same As Automann 139.2835, Euclid E11420, Euclid...
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- $79.99
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- $79.99
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Auto Slack Adjuster R802486 1-1/2-28 X 6" 139.2836 1-1/2-28 Spline. 6" Arm. Same As Meritor R802486, Meritor R803054, Meritor A14-3275-B-1146, Meritor A143275B1146, Dayton 05-3622, Euclid E-11421.1-1/2-28 Spline. 6"...
- Regular price
- $79.99
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- $79.99
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Auto Slack Adjuster R802487 1-1/2-28 X 6" 139.2837 1-1/2-28 Spline. 6" Arm. Same As Meritor R802487, Meritor R803055, Meritor A14-3275-C-1147, A143275C1147, Dayton 05-3621, Euclid E-11422.1-1/2-28 Spline. 6" Arm....
- Regular price
- $79.99
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- $79.99
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Auto Slack Adjuster R802512 1-1/2-28 X 6-1/2" 139.2848 Auto Slack Adjuster R802512 1-1/2-28 X 6-1/2" 139.2848. Same As Automann 139.2848, Meritor R802512, Euclid E-11403, Euclid E11403.
- Regular price
- $75.99
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- $75.99
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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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