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  1. Haldex
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  1. 1.25 inches
  2. 1.50 inches
  3. 1.62 inches
  1. 10
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  2. 5.50 inches
  3. 6.00 inches
  4. 6.50 inches
  1. 6.00 inches
  2. 6.50 inches
  3. 7.00 inches
Part#: 40020225

Availability: Typically ships in 5 to 7 business days.
Your Price $92.91
List Price $178.68
You Save $85.77 - 48%
Genuine Haldex self-securing automatic slack adjuster with 1.5 inch Camshaft Diameter, 10 Spline, 5.5 inch Arm Span. OEM #: 409-20001
  • Slack Adjustor Type:Automatic
  • Slack Adjustor Arm:Straight
  • Camshaft Diameter:1.50 inches
  • Spline Teeth:28
  • Arm Span (A):6.00 inches
  • Cross References:409-20007


Part#: 40020226

Availability: Typically ships in 5 to 7 business days.
Your Price $92.91
List Price $178.68
You Save $85.77 - 48%
Genuine Haldex self-securing automatic slack adjuster with 1.5 inch Camshaft Diameter, 10 Spline, 5.5 inch Arm Span. OEM #: 409-20001
  • Slack Adjustor Type:Automatic
  • Slack Adjustor Arm:Straight
  • Camshaft Diameter:1.50 inches
  • Spline Teeth:10
  • Arm Span (A):5.50 inches
  • Cross References:409-20001


Part#: 40020227

Availability: Typically ships in 5 to 7 business days.
Your Price $92.91
List Price $178.68
You Save $85.77 - 48%
Genuine Haldex self-securing automatic slack adjuster with 1.5 inch Camshaft Diameter, 28 Spline, 5.5 inch Arm Span. OEM #: 409-20009
  • Slack Adjustor Type:Automatic
  • Slack Adjustor Arm:Straight
  • Camshaft Diameter:1.50 inches
  • Spline Teeth:28
  • Arm Span (A):5.50 inches
  • Cross References:409-20003


Part#: 40020228

Availability: Typically ships in 5 to 7 business days.
Your Price $92.91
List Price $178.68
You Save $85.77 - 48%
Genuine Haldex self-securing automatic slack adjuster with 1.5 inch Camshaft Diameter, 10 Spline, 5.5 inch Arm Span. OEM #: 409-20017
  • Slack Adjustor Type:Automatic
  • Slack Adjustor Arm:Straight
  • Camshaft Diameter:1.50 inches
  • Spline Teeth:10
  • Arm Span (A):5.50 inches
  • Cross References:409-20017


Part#: 40020229

Availability: Typically ships in 5 to 7 business days.
Your Price $92.91
List Price $178.68
You Save $85.77 - 48%
Genuine Haldex self-securing automatic slack adjuster with 1.5 inch Camshaft Diameter, 28 Spline, 5.5 inch Arm Span. OEM #: 409-20018
  • Slack Adjustor Type:Automatic
  • Slack Adjustor Arm:Straight
  • Camshaft Diameter:1.50 inches
  • Spline Teeth:28
  • Arm Span (A):5.50 inches
  • Cross References:409-20018


Part#: 40020230

Availability: Typically ships in 5 to 7 business days.
Your Price $92.91
List Price $178.68
You Save $85.77 - 48%
Genuine Haldex self-securing automatic slack adjuster with 1.5 inch Camshaft Diameter, 28 Spline, 5.5 inch Arm Span. OEM #: 409-20018
  • Slack Adjustor Type:Automatic
  • Slack Adjustor Arm:Straight
  • Camshaft Diameter:1.50 inches
  • Spline Teeth:28
  • Arm Span (A):5.50 inches
  • Cross References:409-20018


Part#: 40020231

Availability: 4 In Stock as of 2/13/2016 12:21:41 AM EST.
Your Price $92.91
List Price $178.68
You Save $85.77 - 48%
Genuine Haldex self-securing automatic slack adjuster with 1.5 inch Camshaft Diameter, 28 Spline, 5.5 inch Arm Span. OEM #: 409-20019
  • Slack Adjustor Type:Automatic
  • Slack Adjustor Arm:Straight
  • Camshaft Diameter:1.50 inches
  • Spline Teeth:28
  • Arm Span (A):5.50 inches
  • Cross References:409-20019


Part#: 40020232

Availability: Typically ships in 5 to 7 business days.
Your Price $92.91
List Price $178.68
You Save $85.77 - 48%
Genuine Haldex self-securing automatic slack adjuster with 1.5 inch Camshaft Diameter, 10 Spline, 6 inch Arm Span. OEM #: 409-20020
  • Slack Adjustor Type:Automatic
  • Slack Adjustor Arm:Straight
  • Camshaft Diameter:1.50 inches
  • Spline Teeth:10
  • Arm Span (A):6.00 inches
  • Cross References:409-20020


Part#: 40020233

Availability: Typically ships in 5 to 7 business days.
Your Price $92.91
List Price $178.68
You Save $85.77 - 48%
Genuine Haldex self-securing automatic slack adjuster with 1.5 inch Camshaft Diameter, 10 Spline, 6 inch Arm Span. OEM #: 409-20021
  • Slack Adjustor Type:Automatic
  • Slack Adjustor Arm:Straight
  • Camshaft Diameter:1.50 inches
  • Spline Teeth:10
  • Arm Span (A):6.00 inches
  • Cross References:409-20021


Part#: 40020234

Availability: Typically ships in 5 to 7 business days.
Your Price $92.91
List Price $178.68
You Save $85.77 - 48%
Genuine Haldex self-securing automatic slack adjuster with 1.5 inch Camshaft Diameter, 28 Spline, 6 inch Arm Span. OEM #: 409-20023
  • Slack Adjustor Type:Automatic
  • Slack Adjustor Arm:Straight
  • Camshaft Diameter:1.50 inches
  • Spline Teeth:28
  • Arm Span (A):6.00 inches
  • Cross References:409-20023


Part#: 40020235

Availability: Typically ships in 5 to 7 business days.
Your Price $92.91
List Price $178.68
You Save $85.77 - 48%
Genuine Haldex self-securing automatic slack adjuster with 1.25 inch Camshaft Diameter, 10 Spline, 5.5 inch Arm Span. OEM #: 409-20040
  • Slack Adjustor Type:Automatic
  • Slack Adjustor Arm:Straight
  • Camshaft Diameter:1.25 inches
  • Spline Teeth:10
  • Arm Span (A):5.50 inches
  • Cross References:409-20040


Part#: 40020236

Availability: Typically ships in 5 to 7 business days.
Your Price $92.91
List Price $178.68
You Save $85.77 - 48%
Genuine Haldex self-securing automatic slack adjuster with 1.5 inch Camshaft Diameter, 10 Spline, 5.5 inch Arm Span. OEM #: 409-20009
  • Slack Adjustor Type:Automatic
  • Slack Adjustor Arm:Straight
  • Camshaft Diameter:1.50 inches
  • Spline Teeth:10
  • Arm Span (A):5.50 inches
  • Cross References:409-20009


Automatic Brake Adjusters

An automatic slack adjuster (also called a brake adjuster) is a mechanical component in the air brake system. This component adjusts the brakes automatically, as needed, while the vehicle is in operation. These adjustments are necessary to compensate for the wear in the brake shoes that is caused by the normal operation of the braking system.

According to Federal Motor Vehicle Safety Standard No. 121, if a vehicle is equipped with an air brake system was manufactured after October 20, 1994 it must be equipped with an automatic slack adjuster. Vehicles manufactured before this date may use a manual slack adjuster.

Automatic Slack Adjuster
 

According to this notice, issued by the National Institute for Occupational Safety and Health: Manually adjusting an automatic slack adjuster can contribute to the unexpected failure of the braking system.


Popular Automatic Slack Adjusters

Part #: SA22102 Slack Adjuster 1.5 - 28 Spline, 5.5 inch & 6.5 inch Span - SA22102
A Crewson Brunner type automatic slack adjuster with 1.5 inch Camshaft Diameter, 28 Spline, 5.5 inch & 6.5 inch Arm Span.
Your Price
$64.42
List Price
$125.84
You Save
$61.42
Part #: 40020305 Slack Adjuster 28 Spline, 6 inch Span, 1.5 inch Camshaft Diameter - 40020305
Genuine Haldex self-securing automatic slack adjuster with 1.5 inch Camshaft Diameter, 28 Spline, 6 inch Arm Span. OEM #: 409-20014
Your Price
$104.68
List Price
$178.68
You Save
$74.00
Part #: 40020227 Slack Adjuster 1.5 inch - 28 Spline, 5.5 inch Span - 40020227
Genuine Haldex self-securing automatic slack adjuster with 1.5 inch Camshaft Diameter, 28 Spline, 5.5 inch Arm Span. OEM #: 409-20009
Your Price
$92.91
List Price
$178.68
You Save
$85.77
Part #: 40020231 Slack Adjuster 1.5 inch - 28 Spline, 5.5 inch Span - 40020231
Genuine Haldex self-securing automatic slack adjuster with 1.5 inch Camshaft Diameter, 28 Spline, 5.5 inch Arm Span. OEM #: 409-20019
Your Price
$92.91
List Price
$178.68
You Save
$85.77
Part #: SA23106 Slack Adjuster 1.625 - 37 Spline, 5 inch & 6 inch Span - SA23106
A Crewson Brunner type automatic slack adjuster with 1.625 inch Camshaft Diameter, 37 Spline, 5 inch & 6 inch Arm Span.
Your Price
$64.42
List Price
$125.24
You Save
$60.82

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