134.1041 Manual Slack Adjuster – Compatible with Universal Heavy-Duty Truck and Trailer Applications 5 in 6 in 7 in Arm Span Replaces Part Number Direct Replacement 134.1041A 278323 278323N E-612HD

This aftermarket manual slack adjuster is designed for universal heavy-duty truck and trailer brake systems that use cam-style air brake assemblies. The component is configured with adjustable arm span options of 5 in, 6 in, and 7 in to accommodate multiple brake linkage setups and is intended as a direct replacement for common manual adjuster applications. It mounts to standard S-cam brake systems and interfaces with existing brake hardware without modification. The unit measures approximately 10 × 5 × 2 in and weighs about 5.2 lb. Cross-reference compatibility includes 134.1041, 134.1041A, 278323, 278323N, E-612HD, E612BK, R822000, R823000, and R824000.

• Compatibility: Aftermarket manual slack adjuster compatible with universal heavy-duty truck and trailer cam-style brake systems
• Dimensions: Measures approximately 10 × 5 × 2 in; weighs ~5.2 lb
• Cross-Reference Compatible – 134.1041 134.1041A 278323 278323N E-612HD E612BK R822000 R823000 R824000
• Durability: Steel construction designed to withstand repeated mechanical cycling in commercial braking environments
• Installation: Splined mounting design intended for direct replacement on standard brake camshafts. Maintains proper brake linkage geometry and stroke adjustment for consistent braking operation