VEHICLE DIFFERENTIAL AND VEHICLE

A vehicle differential includes: a pair of side gears arranged in a differential case; a plurality of friction plates arranged on an axially outer side of respective one of the side gears; and a pressing member that holds the plurality of friction plates together with respective one of the side gears. Each of the side gears has: a gear section that meshes with a pinion gear; and a cylindrical section s that extends from a radially inner portion of the gear section toward an axially side. outer An outer circumferential portion of the cylindrical section meshes with an inner circumferential portion of the pressing member via a helical spline.