ARB 013025SP Air Locker Spare Differential Case - for RD159

The ARB 013025SP is a genuine OEM spare differential case designed specifically for the ARB Air Locker RD159 unit. This replacement case is an essential component for rebuilding or servicing an ARB Air Locker differential, ensuring your locking differential assembly is restored to factory specifications and performance.

ARB Air Locker differentials utilize a precision two-piece case design that delivers higher dimensional accuracy compared to traditional three-piece configurations. This approach allows for tighter tolerances, reduced moving parts, and improved locking responsiveness — all of which depend on a structurally sound differential case.

Key Features:

• Genuine ARB OEM spare part for the RD159 Air Locker differential
• Engineered to ARB's exacting tolerances for proper Air Locker function
• Compatible with ARB's pneumatically actuated locking mechanism
• Designed as part of ARB's comprehensive Air Locker service and spare parts program
• Supports proper sealing of the differential's air circuit to prevent leakage

This part is intended for use by qualified differential installers or technicians performing a rebuild or repair of the ARB RD159 Air Locker. Using genuine ARB replacement components ensures the integrity of the differential assembly and helps maintain ARB's industry-leading reliability standards.