This is a brand new Dana 60 left front axle assembly that fits most 2005-2015 Ford Super Duty F250 and F350 trucks. This axle is 35 spline on both ends. Overall length is 23.73". The outer stub axle part number is 53217. The inner axle number is 84911-2 (not available seperately). If you are unsure of your application you can email with your differential tag number and we will gladly assist you. Shipping is a flat $30.00 in the continental U.S.