Window gasket / weather stripping ideas needed

Spent a good bit of time trying to find a similar thread, my apologies if this is a repeat, please just redirect me...

My 2006 Double Cab is missing the small transitional gasket/weatherstripping (L shaped) that joins and covers the lower belt weatherstrip and rear door channel.



Stopped by the Toyota garage, parts are discontinued. Was told this would be the part -
'2003-2006 Toyota Tundra 757640C020'. Thought I would just source it NOS but the kits I'm finding do not seem to include this transition piece.

Anyone have any experience with this or have ideas where I can source this? The rest of the weather stripping is in fine shape and really does not need replaced.

FYI, I'm in Northwest Arkansas (3 hours to Kansas City, 3 hours to OKC, 6 hours to DFW)

 

That piece you're referring to is part of the entire lower window trim. There are a few aftermarket replacements available if you search the part numbers. Here's one example. I replaced them on all four doors last year and they've held up well.

https://www.millsupply.com/auto-bod...rip-kit-fits-left-right-2-pieces-39700226.php

 

That small piece looks like it's only there to fill the center gap at the bottom, I would consider some black RTV or silicone to fill the void at the bottom, until you needed to replace the whole lot, if ever.

 

Yup, there's a thread for that: https://www.tundras.com/threads/2006-double-cab-exterior-window-trim-piece-part-where-to-buy.106779/

 

Thanks guys, really appreciate the support!

 

Wanted to update the results and potentially close out this thread.

Followed Mustanley's advice, ordered part 397-00-226 from Mill Supply using the link provided above, and it is absolutely what I was looking for. Thank you!