IME they have been pretty much the same for many years now, and snap
into their mounts on the heater tank. But there are various styles, like
with or without high temperature safety cutouts and for single or dual
element (top and bottom) heaters.
If you can put up with turning the heater off while you go shopping,
remove the old ones and take them with you to make sure you get ones
with the same mounting and functions. That's easier than relying on your
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.