This is an original 1965-1966-1967-1968-1969-1970 Chevrolet Axle for all 12 bolt Impala, Caprice, and Bel Air models. The left and right axle are interchangeable and has the unique tip that uses a locking ring to secure the axle to the differential. It is a 30-spline end.
YEAR SIDE LENGTH* SPLINE GM PART #
1965-1970 Left 30 13/16 30 3985720
1965-1970 Right 30 13/16 30 3985720
* Note location for determining axle length is different than GM specs
Spindle washer and nut may be purchased at an additional cost