This roller guide mounts to your window track and is what your regulator roller runs through. This one is 13 1/8 inches and will work on any 4-door model, sedan or wagon model.
This is the one for the REAR door window. One per side.
We also have a listing for pairs, if need be. Get those windows operating smoothly. 1955 1956 or 1957 Chevy.
Made in the USA.