The ARB RD81 Ford 8.8 Inch/31 Spline Air Locker Differential from Nomadic Supply Company uses a pneumatically controlled locking mechanism to switch between an open carrier and a fully locked differential. Once installed, all it takes is the simple flip of a switch to go from an open differential that works well on the street to a spool that provides 100% traction to both wheels off-road.
The ARB RD81 Ford 8.8 Inch/31 Spline Air Locker Differential is a pneumatic locking differential that uses air to facilitate the locking of both axles. This action converts your differential from a conventional open to a full spool type axle supplying 100% power to both wheels to keep you going through the worst terrain. An ARB CKMTA12 Onboard Air Compressor is required to activate Air Lockers.
The ARB RD81 Ford 8.8 Inch/31 Spline Air Locker Differential for your 35 spline axle for all gear ratios, can instantly lock differentials and allow you to tackle the toughest off-road terrain.
Because the ARB RD81 Ford 8.8 Inch/31 Spline Air Locker Differential is only engaged when needed, it can be installed in BOTH the front and rear axles, with separate switches independently controlling the ARB RD81 Ford 8.8 Inch/31 Spline Air Locker Differential from within the off-road truck or vehicle.
ARB RD81 Ford 8.8 Inch/31 Spline Air Locker Differential Features:
- Air powered via external compressor
- One piece nodular iron carrier case
- Proprietary timed locking mechanism for smooth locking
- Highest grade nickel alloy steel gears (30% stronger than OEM)
- Billet machined spider gear block
- Steel reinforced internal seals rated for over 20k cycles
- For Use With 31 Spline Axles
- Air Activated Selectable Locker
- Converts From Open Differential To fully Locked Or Spool
- Simple Push Button Operation
- Requires an ARB CKMTA12 Onboard Air Compressor (Sold Separately)
Installation:
ARB lockers require no special tools or skills to install, apart from those necessary for fitting a standard differential. An ARB air compressor is the only additional thing you will need as each ARB locker comes complete with switches, solenoids, fittings, nylon air line, and even shims and bearings (if applicable).
Durability:
ARB Air Lockers are sold in over 80 countries and there are over 150,000 units currently in use worldwide in both military and civilian applications. The secret to their success and reliability is that each ARB locker is designed and tested beyond the breaking point of standard and aftermarket axles such that your axles will break before causing any damage to the air locker.
Design:
Each locker is machined from a solid piece of nodular iron and encases 4 pinion gears (twice as many as most OEM differentials) with unique geometry that make them up to 30% stronger than OEM gears. The side gears that transfer force to the axle shafts are made from the highest grade nickel alloy steel and are finished with an aerospace grade surface treatment. ARB’s proprietary timed locking system prevents gear grinding during engagement and extends the life of the unit.
WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to