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Slack Adjuster Cross Reference Chart

The JIT Truck Parts Slack Adjuster Cross Reference Chart shares slack adjusters compatible with a wide variety of semi-truck and heavy-duty commercial vehicle models and applications.
The part number, spline diameter, spline count, arm length, manufacturer and slack adjuster crosses are all listed below. The spline diameter and arm length are two important measurements to consider when choosing a truck or trailer slack adjuster, as they will determine whether the part will properly fit your vehicle.

In addition to the spline diameter and arm length, some other information that may be helpful when choosing a slack adjuster includes the following:

  • Bolt pattern: The bolt pattern refers to the number of bolts and their spacing on the adjuster.

  • Nut size: The nut size is the size of the fastener that secures the adjuster to the axle.

  • Torque specifications: The torque specifications are the values that indicate how much force should be applied when tightening the adjuster.

  • Lubrication: Some slack adjusters require lubrication to function properly. It is important to follow the manufacturer's recommendations for lubrication to ensure the adjuster performs as intended.

By leveraging the JIT Truck Parts Slack Adjuster Cross Reference Chart you can confidently select the slack adjuster best suited for your vehicle model and application, as well as shop prices.

To learn more about Slack Adjusters see our article What Are Slack Adjuisters?

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Slack Adjuster Cross References

Spline Diameter / Spline Count

Arm Length

Gunite®

Meritor®

Stemco®

Bendix®

Haldex/Midland®

1-1/2" - 10

5-1/2"

AS1132

R801041

MK21100S

278326N

40010121

1-1/2" - 10

5-1/2"

AS1132

R801043

MK21100S

973530N

40010143

1-1/2" - 10

5-1/2"

AS1132

R806022A

MK21100S

975628N

40010121

1-1/2" - 10

5-1/2"

AS1132

R806022A

MK21100S

975628N

40010121

1-1/2" - 28

5-1/2"

AS1140

R802462

MK22200S

K043197

40010211

1-1/2" - 28

5-1/2"

AS1140

R802462

MK222005

K043197

40010211

1-1/2" - 28

5-1/2"

AS1178

M807005

MK22152S

-

40010304

1-1/4" - 10

5-1/2"

AS1036

R801001

MK44100S

325635

40010013

1-1/4" - 10

5-1/2"

AS1036

R801004

MK24100S

325635

40010072

1-1/2" - 10

5",6"

AS1031

M807005

MK21103S

-

40110142

1-1/2" - 28

5",6"

AS1039

M807024

MK22103S

808746

40010140

1-1/2" - 10

6"

AS1033

R802356

-

K041876

40010216

1-1/2" - 28

6"

AS1041

M807024

MK22106S

286965N

40010144

1-1/2" - 28

6"

AS1041

R801069

MK22103S

815829

40110212

1-5/8" - 37

6"

AS1044

M807014

MK43106S

K102371

40110214

It's worth noting that cross-referencing is not always a straightforward process. It is important to double-check the specifications and compatibility of any cross-referenced truck part before making a purchase.


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