Here we have a good used rear differential with limited slip and 3.73 gears removed from a 2012 GMC Sierra 1500 denali, Please review all of the photos carefully it will come exactly as pictured. Any questions please just inquire. Should fit most 07-13 Chevy/GMC half ton series trucks with six bolt wheels and the same gear ratio. Please verify fitment with your dealer if there is any concerns.