Alliance Automatic Slack Adjuster – ABP/N42AS-AS1140 (5.5" Arm, 28 Spline, Gunite)

The ABPN42AS-AS1140 Automatic Slack Adjuster is a heavy-duty brake component designed for reliable adjustment and consistent braking performance on commercial trucks and trailers equipped with drum brakes. Built for demanding heavy-duty applications, this slack adjuster helps maintain proper brake shoe-to-drum clearance and supports dependable brake system operation.

Key Features:

• Heavy-duty automatic slack adjuster
• Designed for commercial truck and trailer drum brake systems
• 28-spline configuration
• 6-inch arm length
• 1-1/2-inch camshaft diameter
• Straight-arm design
• Suitable for heavy-duty drive axle applications
• Designed for durability and long service life

Part Number: ABPN42AS-AS1140

Verify spline count, arm length, camshaft diameter, clevis configuration, and brake chamber compatibility before ordering. Cross-reference information identifies ABPN42AS and AS1140 among compatible slack-adjuster numbers.