Great question — answering as the UphillTech team:
You should be able to find a replacement pretty easily. I put "home depot p trap" into Google and came up with the following product in under a minute: I believe this would work for your application. Where I am, they list it as available in-store, so you should have luck finding it in store. Otherwise, you could order it. The one in the image is specifically called "1-1/2 in. Plastic J-Bend."
Full answer by Hari: https://diy.stackexchange.com/a/127955 (CC BY-SA 3.0).
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