Automann 135.S2843 Self-Setting Slack Adjuster | 1.5"-28 x 6" | 12.25" Trailer Brakes

Maintain optimal brake clearance and reliable stopping power with the Automann 135.S2843. This premium Haldex-style Self-Setting (SABA) automatic slack adjuster is purpose-built for trailer axles equipped with 12-1/4" brakes.

The self-setting design is engineered to automatically maintain the correct brake shoe-to-drum clearance, ensuring consistent brake stroke and eliminating the need for frequent manual adjustments. This kit comes fully equipped with the 135.H0563 Mounting Bracket Kit for a complete, hassle-free installation.

Product Specifications

• Brand: Automann

• Part Number: 135.S2843

• Slack Type: Automatic - Haldex Type (Self-Setting)

• Application: Universal Trailer Axles (12-1/4" Brakes)

• Spline Diameter: 1-1/2"

• Spline Count: 28

• Arm Length: 6" (L1-L2)

• Included Hardware: 135.H0563 Bracket Kit

Key Features & Benefits

• Self-Setting (SABA) Technology: Simplifies installation by automatically establishing the correct clearance upon the first few brake applications.

• Trailer Optimized: Specifically designed for the unique torque requirements of trailer axles with 12-1/4" brake systems.

• Durability: Built to withstand heavy-duty hauling and harsh road conditions, reducing maintenance intervals.

• Safety Compliance: Helps ensure your trailer remains within DOT stroke limits, reducing the risk of roadside citations.

Industry Cross Reference

This unit is a direct high-quality replacement for the following reference and manufacturer part numbers: