Slack Adjusters
140 ProductsBrake & Wheel End Brake & Wheel End Categories (22)
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Auto Slack Adjuster 40020236 1-1/2-10 X 5-1/2" 135.S1013 S-ABA Slack Adjuster 135.S10131-1/2-10 Spline, 5-1/2" Arm. Same As Automann 135.S1013, Haldex 40020236, Haldex 400-20236, Haldex 409-20009, Haldex 40920009, Mack...
- Regular price
- $128.99
- Sale price
- $128.99
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Auto Slack Adjuster 40020238 1-1/2-10 X 5-1/2" 135.S1034 S-ABA Slack Adjuster 135.S10341-1/2-10 Spline, 5-1/2" Arm. Same As Automann 135.S1034, Haldex 40020238, Haldex 400-20238, Haldex 409-20044, Haldex 40920044, IHC...
- Regular price
- $128.99
- Sale price
- $128.99
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Auto Slack Adjuster 40020239 1-1/2-10 X 5-1/2" 135.S1031A S-ABA Slack Adjuster 135.S1031A1-1/2-10 Spline, 5-1/2" Arm. Same As Automann 135.S1031A, Haldex 40020239, Haldex 400-20239, Haldex 409-20045, Haldex 40920045, IHC...
- Regular price
- $128.99
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- $128.99
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Auto Slack Adjuster 40020240 1-1/2-28 X 5-1/2" 135.S2835A S-ABA Slack Adjuster 135.S2835A1-1/2-28 Spline, 5-1/2" Arm. Same As Automann 135.S2835A, Haldex 40020240, Haldex 400-20240, Haldex 409-20046, Haldex 40920046, IHC...
- Regular price
- $128.99
- Sale price
- $128.99
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Auto Slack Adjuster 40020241 1-1/2-28 X 5-1/2" 135.S2816 S-ABA Slack Adjuster 135.S28161-1/2-28 Spline, 5-1/2" Arm. Same As Haldex 40020241, Haldex 400-20241, Haldex 409-20011, Haldex 40920011, IHC ZZ40020241, Mack...
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- $128.99
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- $128.99
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Auto Slack Adjuster 40020243 1-1/2-28 X 6" 135.S2832 S-ABA Slack Adjuster 135.S2832 1-1/2-28 Spline, 6" Arm. Same As Automann 135.S2832, Haldex 40020243, Haldex 400-20243, Haldex 409-26006, Haldex 40926006,...
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- $128.99
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- $128.99
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Auto Slack Adjuster 40020304 1-1/2-28 X 5-1/2" 135.S2844 S-ABA Slack Adjuster 135.S2844 1-1/2-28 Spline, 5-1/2" Arm. Same As Automann 135.S2844, Haldex 400-20304, Haldex 40020304, Haldex 409-20010, Haldex 40920010,...
- Regular price
- $128.99
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- $128.99
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Auto Slack Adjuster 40020305 1-1/2-28 X 6" 135.S2843 S-ABA Slack Adjuster 135.S2843 Same As Automann 135.S2843, Haldex 409-20014, Haldex 40920014, Haldex 400-20305, Haldex 40020305, Haldex 40020220, Haldex 400-20220,...
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- $128.99
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- $128.99
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Auto Slack Adjuster AS1132 1-1/2-10 X 5-1/2" 138.1011 Automatic Slack Adjuster AS11321-1/2-10 Spline, 5-1/2 Arm. Same As Sirco SA1132, Midwest WAAS1132, Automann 138.1011, Gunite AS1132, Gunite AS1019, Gunite...
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- $79.99
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- $79.99
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Auto Slack Adjuster AS1133 1-1/2-10 X 6" 138.1030 Automatic Slack Adjuster AS11331-1/2-10 Spline, 6" Arm. Same As Midwest WAAS1133, Sirco SA1133, Automann 138.1030, Gunite AS1133, Gunite AS1147, Dayton...
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- $79.99
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- $79.99
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Auto Slack Adjuster AS1136 1-1/4-10 X 5-1/2" 138.1010 Automatic Slack Adjuster AS11361-1/4-10 Spline, 5-1/2" Arm. Same As Sirco SA1136, Automann 138.1010, Midwest WAAS1136, Gunite AS1136, Gunite AS1152, Euclid...
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- $79.99
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- $79.99
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Auto Slack Adjuster AS1138 1-1/4-24 X 5-1/2" 138.2410 Automatic Slack Adjuster AS11381-1/4-24 Spline, 5-1/2" Arm. Same As Sirco SA1138, Automann 138.2410, Gunite AS1138, Gunite AS1154, Batco 05-272, Euclid...
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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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