Just had to replace my Heater hose elbows on buick lesabre 1996..
Originally when I grab the parts, before I tempted to put them on the aluminum ones were wrong. You have to be specific when you ask for them. I suggest bringing the old ones with you.
Hard to find the right ones had to have them come from another city so waited until next day through O'Reilly'* Auto Parts.
New to forum, so hope this lands in right place.
This was the correct one for my car. $35.00 a piece.

Thanks for the post, this is good information re the Dorman heater hose Elbow.
This was moved into a new thread to eliminate confusion.
For upgrading the plastic elbow at the tensioner to a Dorman aluminum one, that often cracks & leaks coolant- see this thread as well.
https://www.gmforum.com/buick-172/03...-311734/page2/

Thanks for the info, and welcome to the Forum!

Happy to be here

I tapped out the last idler I replaced and went with NPT to Barb fittings. No o-rings to worry about. $50 at a local machine shop.