Call Moen customer service. I've dealt with them before and they're good. They'll probably ask for pix while you're on the phone. They should be able to supply you with the correct cartridge.
Answer from HoneyDo on Stack ExchangeVideos
Call Moen customer service. I've dealt with them before and they're good. They'll probably ask for pix while you're on the phone. They should be able to supply you with the correct cartridge.
If you couldn't get the clip back in, then you either installed it wrong or it's the wrong cartridge. Moen doesn't change their cartridge design as often as other manufacturers and most have that clip that ensures the cartridge is in all the way and lined up right. Take the pieces to a plumbing supply store if you can't get the cartridge you bought to work.
There are three sets of numbers in the old cartridge that I can see after I remove the faceplate. 04115 and 16:24 and 158085. I bought the 1225 cartridge since I was told it was the most popular, but that is not right.
Maybe I am just talking out my ass but why must they make it so difficult to identify by making you to turn off the main water and removing the part to find the number or taking it to Home Depot to match when they can just simply put a model number on the stem end for anyone to see??? It would be so much easier to order the part or at least check inventory status for the closest supply store before having to remove the whole cartridge.