Slack Adjusters
140 ProductsBrake & Wheel End Brake & Wheel End Categories (22)
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Manual Slack Adjuster 1-1/2-10 X 6" & 7" LH 5/8" Offset 134.1046 LH Offset Manual Slack Adjuster 1-1/2-10 Spline, 6 & 7 Arm, 5/8 Offset. Same As Network M-1061, Midwest WA279947, Automann...
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- $52.99
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- $52.99
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Manual Slack Adjuster 1-1/2-10 X 6" & 7" RH 5/8" Offset 134.1047 RH Offset Manual Slack Adjuster 1-1/2-10 Spline, 6 & 7 Arm, 5/8 Offset. Same As Network M-1062, Midwest WA279946, Automann...
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- $52.99
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- $52.99
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Manual Slack Adjuster 1-1/2-10 X 6" Curved 134.1042 Manual Slack Adjuster E-20911-1/2-10 Spline. 6" Arm. Curved Arm For 12-1/4 Brakes. Same As Sirco S2025, BWP M-475, Automann 134.1042,...
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- $66.99
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- $66.99
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Manual Slack Adjuster 1-1/2-28 x 5" & 6" KSA051 Manual Slack Adjuster KSA0511-1/2"-28 Spline, 5 & 6 Arm. 1/2" Pin. Same As Automann 134.2840, Sirco S2011A, WAKN44051, Velvac 035122,...
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- $21.99
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- $21.99
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Manual Slack Adjuster 1-1/2-28 X 5" & 6" LH 5/8" Offset 134.2844 LH Offset Manual Slack Adjuster1-1/2-28 Spline, 6 & 7 Arm, 5/8 Offset. Same As Automann 134.2844, Spicer 10-384, Euclid E-6109,...
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- $55.99
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- $55.99
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Manual Slack Adjuster 1-1/2-28 x 5" 6" & 7" KSA071 Manual Slack Adjuster KSA0711-1/2-28 Spline, 5, 6, & 7 Arm. Same As Automann 134.2841, Sirco S2022A, BWP M-3373, WAKN44071, Velvac...
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- $23.99
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- $23.99
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Manual Slack Adjuster 1-1/2-28 x 5.5" & 6.5" KSA061 Manual Slack Adjuster KSA0611-1/2-28 Spline, 5.5 & 6.5 Arm. 1/2" Pin. Same As Automann 134.2831, Sirco S2019A, WAKN44061, Velvac 035123,...
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- $21.99
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- $21.99
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Manual Slack Adjuster 1-1/2-28 X 6" & 7" RH 5/8" Offset 134.2845 RH Offset Manual Slack Adjuster1-1/2-28 Spline, 6 & 7 Arm, 5/8 Offset. Same As Automann 134.2845, Spicer 10-383, Euclid E-6110,...
- Regular price
- $55.99
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- $55.99
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Manual Slack Adjuster 1-1/2-28 X 6" Curved M-3374 Manual Slack Adjuster E-54981-1/2-28 Spline, 6" Curved Arm For 12-1/4 Brakes. Same As Sirco S2023, Midwest WAKN51010, BWP M-3374, Automann...
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- $28.99
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- $28.99
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Manual Slack Adjuster 1-1/4-10 X 4.5" & 5.5" 134.1010 Manual Slack Adjuster E-49041-1/4-10 Spline. 4-1/2 And 5-1/2 Arm. Same As Sirco S2026, BWP M-3375, Automann 134.1010, Midwest WAKN48031, Velvac...
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- $31.99
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- $31.99
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Manual Slack Adjuster 1-1/4-10 X 4.5" & 5.5" LH 5/8" Offset 134.1018 LH Offset Manual Slack Adjuster1-1/4-10 Spline, 4-1/2 & 5-1/2 Arm, 5/8 Offset. Same As WAKN49010, BWP M-2581, Automann 134.1018, Dayton...
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- $29.99
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- $29.99
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Manual Slack Adjuster 1-1/4-10 X 4.5" & 5.5" RH 5/8" Offset 134.1019 RH Offset Manual Slack Adjuster1-1/4-10 Spline, 4-1/2 & 5-1/2 Arm, 5/8 Offset. Same As WAKN49000, BWP M-2580, Automann 134.1019, Dayton...
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- $30.99
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- $30.99
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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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