ARB Differential Housing Spreader Kit 0770003

ARB’s Air Locker Differential Spreader is a professional automotive tool that no differential installer should be without.

ARB 0770003

ARB’s Air Locker Differential Spreader is a professional automotive tool that no differential installer should be without. Most common Salisbury style axle assemblies (e.g., Dana Spicer model 44) require the use of a differential spreader in order to achieve the required carrier bearing pre-load during set-up. Stretching the housing casting (or ‘pumpkin’) open by sufficient enough force as to allow extra shim to be added to create the pre-load is the method that the OEM manufacture’s endorse, and most manufacture’s have included special ‘spreader sockets’ in the housing for exactly this purpose.