The part I ordered was a direct OEM replacement of the original rack's right hand track. The part arrived in less than 72 hours (despite me selecting standard shipping) and I was able to swap the part out in less than 30 minutes. Only hiccup was when I slid the dishwasher out to access the screws and the drain line disconnected, totally my own fault, and I didn't notice until I had ran the dishwasher for a few minutes.