Newbie needs help identifying a cartridge!

[newbie]

Hello there. I recently purchased and moved into a 1981 Champion Tamarack mobile home, and the splines on one of the cartridges in my tub stripped out (luckily in the off position). I then stupidly went to Lowe's to find a replacement, and lost the bugger. So here are pictures of the other one, is there any chance someone could help me find a replacement? I currently have the main valve shut off until I can dismantle my closet to get to the access behind the tub. The faucet fixture is unmarked as far as I can tell. The cartridge measures 1.25" tall and 20mm across at the threads. There are 17 splines. I would really appreciate some insight here. Thank you in advance!
Cartridge:

And the faucet:

 

[newbie]

The faucet brand is actually "Stanadyne". Just found the stamp

 

[Matt30]

The trim plate looks like a Chevrolet symbol. I want it!

 

[newbie]

I managed to find the lost cartridge and put it back into the faucet, but still no luck finding a replacement. The stem is threaded, if that helps at all. I don't want to have to replace the whole fixture unless absolutely necessary.

 

[Mr_David]

Was the Stanadyne stamped on the tub spout or the valve plate?

Stanadyne is now MOEN since 1989
That is a Moen spout and may have been replaced.

I was looking at some random stems and came across some for a Streamway faucet that looks like what you have.

Try searching for that. I used Google images.


Link to
faucet-stem-for-streamway

 

[newbie]

Mr. David, thank you thank you thank you! This looks exactly like what I need. You're a lifesaver!