ARB 028619SP Flange Cap Kit for RD177 Air Locker with Bonded Seal

The ARB 028619SP is a replacement flange cap kit designed specifically for the RD177 Air Locker differential model. This genuine ARB service component is essential for maintaining the proper operation of your Air Locker locking differential system.

Key Features:

• OEM replacement part for ARB RD177 Air Locker (Dana 70/80 applications)
• Includes bonded seal for reliable air-tight performance
• Precision-manufactured to ARB's exacting specifications
• Designed for 40-spline applications with 4.10 and lower gear ratios
• Essential component for Air Locker seal housing assembly

This flange cap kit is a critical service part that helps maintain the pneumatic integrity of your ARB Air Locker system. The included bonded seal ensures proper air pressure containment, which is essential for reliable differential locking operation. ARB Air Lockers use compressed air to activate a locking mechanism inside the differential, converting it from an open differential to a fully locked unit for maximum traction in demanding off-road conditions.