Slack Adjusters
140 ProductsBrake & Wheel End Brake & Wheel End Categories (22)
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Auto Slack Adjuster MK21102S 1-1/2-10 X 5.5" & 6.5" 136.1031 Auto Slack Adjuster E-6992ACrewson Style, 1-1/2-10 Spline, 5-1/2 & 6-1/2 Arm, 16-1/2 Drive And Trailer. Same As Sirco SA21102, BWP...
- Regular price
- $79.99
- Sale price
- $79.99
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Auto Slack Adjuster MK22102 1-1/2-28 X 5.5" & 6.5" 136.2831 Auto Slack Adjuster E-6994ACrewson Style, 1-1/2-28 Spline, 5-1/2 And 6-1/2 Arm, 16-1/2 Drive And Trailer. Same As Sirco SA22102, Midwest...
- Regular price
- $79.99
- Sale price
- $79.99
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Auto Slack Adjuster MK22103S 1-1/2-28 X 5" & 6" 136.2830 Auto Slack Adjuster E-6993ACrewson Style, 1-1/2-28 Spline, 5 And 6 Arm, 16-1/2 Drive And Trailer. Same As Sirco SA22103, Midwest...
- Regular price
- $79.99
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- $79.99
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Auto Slack Adjuster MK22152 1-1/2-28 X 5.5" & 6.5" Curved 136.2844 Auto Slack Adjuster 136.28441-1/2-28 Spline. 5.5" And 6.5" Drill. Curved. Same As Automann 136.2844, Network R-22152CR, Crewson CB22152, Haldex CS52352,...
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- $79.99
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- $79.99
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Auto Slack Adjuster MK22153 1-1/2-28 X 5" & 6" Curved 136.2843 Auto Slack Adjuster E-10949ACrewson Style 1-1/2-28 Spline, 5 And 6 Arm, 12-1/4 Trailer. Same As Sirco SA22953, BWP M-3492, Automann...
- Regular price
- $79.99
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- $79.99
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Auto Slack Adjuster MK23102 1-5/8-37 X 5.5" & 6.5" 136.3740 Auto Slack Adjuster 05-565Crewson Style. 1-5/8-37 Spline. 5-1/2 And 6-1/2 Arm. Same As BWP M-3372, Crewson MK23102S, Haldex CS52325, Automann...
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- $79.99
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- $79.99
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Auto Slack Adjuster MK23106 1-5/8-37 X 5" & 6" 136.3741 1-5/8-37 X 5" & 6" Auto Slack Adjuster 136.3741. Same As Automann 136.3741, Sirco SA23106, Midwest WA23106, Network M-3371, Crewson...
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- $79.99
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- $79.99
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Auto Slack Adjuster MK24100 1-1/4-10 X 5-1/2" 136.1010 Auto Slack Adjuster E-6987ACrewson Style, 1-1/4-10 Spline, 5-1/2 Arm, 15" Meritor T And Eaton S.A.P. Same As Sirco SA24100, BWP...
- Regular price
- $79.99
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- $79.99
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Auto Slack Adjuster MK25100 1-1/4-24 X 5-1/2" 136.2410 Auto Slack Adjuster E-6989ACrewson Style, 1-1/4-24 Spline, 5-1/2 Arm, 15" Meritor T And Q Brakes. Same As Sirco SA25100, BWP...
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- $79.99
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- $79.99
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Auto Slack Adjuster Pawl Kit 139.1700 Auto Slack Pawl Kit R801700Pull Pawl Assembly With Curved Face. Same As Automann 139.1700, Meritor R801700, Euclid E11432, Euclid E-11432.
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- $17.99
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- $17.99
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Auto Slack Adjuster R801001 1-1/4-10 X 5-1/2" 139.1010 Automatic Slack Adjuster1-1/4-10 Spline, 5-1/2 Arm. Same As Automann 139.1010, Dayton 05-370, Euclid E-11395, Meritor R801001, Meritor A13275A1145S, A13275Z1144S, A23275H1152S,...
- Regular price
- $79.99
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- $79.99
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Auto Slack Adjuster R801003 1-1/4-24 X 5-1/2" 139.2410 Automatic Slack Adjuster 05-3721-1/4-24 Spline, 5-1/2" Arm. Same As Automann 139.2410, Dayton 05-372, Euclid E-11397, Meritor R801003, A113275A1145, A113275H1152, A113275Z1144,...
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- $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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