I bought this product 0121109015 by mistake. For this the pipe flange must be larger than 2 3/8, otherwise the nut will slip over it and off. My original part has the same thread, but has a 1 15/16 hole to capture a smaller flange. Going off the photos, I'm going to try to replace it with 0121108015. It would be nice to have the information in advance, rather than buy trial and error.
Rating: [4 of 5 Stars!]