Product review (5 stars): It works
The belt comes in a bag with pictures showing the proper placement around the motor and idler pulley for the different brands of dryer this belt fits on.  It was delivers promptly and securely.  The belt has the part number on it, but does not have a brand name (in case that matters to you).
I had the darndest time keeping the belt flat on the drum until I took out the drum and duct taped the belt to the drum where the belt used to be with short pieces of tape in about 8 places around the drum and then put the drum back in the dryer (that's 5 times in one sentence).  After I got the drum and belt re-installed, I just rotated the drum and removed the pieces of tape (hint, count the pieces before you put the drum back in the dryer)