The adjuster nut is what sets and holds carrier bearing preload during an Air Locker install — this is genuine ARB spare part 100101SP for your differential.
The adjuster nut threads into the differential housing bearing caps to set and lock carrier bearing preload when installing or servicing an ARB Air Locker. Adjuster nuts are model-specific, so match part 100101SP to your exact differential and Air Locker before ordering, and torque to ARB's specification on assembly.
Browse ARB Air Lockers and the full ARB range.
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