ARB 220209SP Air Locker Seal Housing Bracket RD139 AAM 11.5" Rear Differential Spare Part

The ARB 220209SP is an OEM-spec spare bracket seal housing designed for use with the ARB Air Locker RD139 unit, which fits the AAM 11.5" rear differential. This replacement component is part of the pneumatic seal housing assembly that enables the Air Locker's pressurized locking operation.

The seal housing bracket plays a critical role in the ARB Air Locker system. Compressed air is routed to the seal housing assembly via a nylon air line, where the bracket provides structural support and precise alignment for the annular seal. Keeping this component in proper working condition ensures consistent, reliable Air Locker engagement.

Key Features:

• OEM ARB spare part — engineered to exact factory specifications
• Designed for the ARB Air Locker RD139 (AAM 11.5" rear differential application)
• Supports the pneumatic seal housing assembly for proper Air Locker function
• Built to ARB's quality standards for extreme off-road use
• Direct replacement for worn or damaged original bracket seal housing

ARB Air Lockers are designed and manufactured in Australia and are trusted in over 100 countries worldwide. When the Air Locker is activated, it prevents the internal differential gears from rotating independently, delivering maximum traction to both driven wheels simultaneously. Keeping spare and replacement components like the 220209SP on hand ensures your Air Locker system remains fully operational. Compatible with ARB Air Locker model RD139.