If you are into car racing or you tend to do some heavy duty hauling or off road driving with your Chevrolet car or truck, you are probably familiar with the benefits of a Chevy posi rear end. As posi or positive rear end is just one way to describe a limited-slip differential, a car part that helps improve traction through a car or truck's wheel and axle system. Having a limited-slip or posi rear end differential allows both wheels to turn at once, a feature that is specific to this kind of differential. This ability can be helpful for traction and velocity in a variety of different driving situations. Whether you are looking to make a change to your car's factory installed differential, or you need to replace a preexisting part in your car or truck, there is a vast inventory of Chevy posi rear end differentials on eBay. This inventory may also include parts for vintage car models, such as a 1957 Chevy rear end.Shop the large inventory of car and truck parts and other differentials and parts for Chevrolet!