Jandy Heater Issue - Leaking

I have a Jandy Legacy LRZ175MN and need a replacement part - part of the heat exchanger is leaking. I have a photo of the leak but cant post it here ??

I believe it is called the "header gasket assembly" - it is made of black PVC .

Help !

Where can I get a replacement part ? Any suggestions would be appreciated !

Steve

When I looked at the Jandy manual, here
http://www.zodiacpoolsystems.com/~/m.../H0299500.ashx
I found the "header gasket assembly", but I'm pretty sure it's not PVC.

This company has a very large stock of parts, but they don't list that one:
http://www.poolpartsonline.com/p-842...ter-parts.aspx

However when I searched by part number (#R0454300), surprisingly enough I found that Amazon stocks it:
Zodiac R0454300 Header Gasket Assembly Replacement Kit

Thanks for the response - appreciate it !