5.5" 28 Spline

Exceeds SAE J1462 & J1513 Requirements 

Heavy Duty Steel Alloy Worm Gear

ISO 9001 & TS 16949 Certified Manufacturer 

Slack adjuster is tested & validated by independent testing facility & are comparable to OEM equivalents 

Maintain safe and consistent brake operation with the TRP Auto Slack Adjuster 5.5" 28 Spline SA1140A Equivalent. Designed for heavy-duty truck and trailer applications, this automatic slack adjuster helps maintain correct brake adjustment, reducing manual maintenance requirements while supporting optimal braking performance.

Manufactured to meet demanding commercial vehicle standards, this TRP slack adjuster provides dependable operation and durability in challenging transport environments. By automatically compensating for brake lining wear, it helps ensure proper brake stroke is maintained, contributing to safer vehicle operation and improved brake system efficiency.

Suitable as an SA1140A equivalent replacement, this component is engineered for reliable fitment and performance, making it an ideal choice for fleet maintenance, workshops, and owner-operators.

Features & Benefits:

• TRP quality replacement component
• 5.5-inch arm length
• 28 spline configuration
• SA1140A equivalent design
• Automatically maintains proper brake adjustment
• Helps reduce brake maintenance requirements
• Supports consistent braking performance
• Durable construction for heavy-duty applications
• Suitable for truck and trailer brake systems
• Reliable fit and long service life

When dependable braking performance matters, trust TRP quality. This automatic slack adjuster is designed to help keep your vehicle's braking system operating efficiently while reducing downtime and maintenance costs.

Buy online from PartsBox Australia for fast shipping on TRP brake components, truck parts, and heavy-duty vehicle maintenance products.