I'm looking for the little gasket/seal that goes around the heater core to seal it off. I don't need the o-rings for the pipes, I need the rectangular seal that goes around the heater core itself. It's part #3 in the image below. Here's a link to the diagram: RealOEM.com
Can anyone help me find this part?

 

I'm thinking that's not available since all the replacement kits show simple weather stripping instead of the gasket itself.

Good Luck

 

https://www.partsgeek.com/catalog/20...ation_kit.html