Thermostat housing coolant leak

Cleaning my 04 DC this afternoon and spotted this gem. Looks dry at the moment and coolant overflow is still at the full mark.

For the repair it looks like i need a new o-ring (96761-35035) and some sort of gasket maker for the square flange.
08826-00100 = $$$$ green stripped tube

$14 00295-00103 Formed-in-Place Oil Pan Gasket - 3 oz. Tube

00295-00103 = $20 a tube and I’ve read it’s been a suitable replacement.

I’m leaning towards using the 103 tube, anybody done the same?

 

I did this repair before.
I went with the same part number. I would recommend replacing your thermostat while you have the coolant out. Mine recently went out causing a grenade of problems

Part Number
96761-35035
Engine Coolant Pipe O-Ring $4.11

 

I would just add, courtesy this exact leak and a linkback to more info lives in this informational thread that covers many 1st Gen quirks and such: https://www.tundras.com/threads/so-you-wanna-buy-just-bought-a-1st-gen-tundra-eh.115928/

It's in the 2nd reply of the thread, inside the coolant leaks bullet point. Search the page for the hyphenated phrase "t-stat" and click the link that follows that word. Common enough leak that at least half a dozen people here have found it. Hell, there was another guy with what is likely the same leak posting during the weekend.

 

Super easy fix, took me 20 minutes I just used permatex gasket maker and a new oring. Also changed the Thermostat and gasket while I was in there!

 

Which gasket maker did you use?

 

I don't remember I just know it was orange. I have use

$14 Toyota Genuine Fluid 00295-00103 Formed-in-Place Oil Pan Gasket - 3 oz. Tube

00295-00103 a ton on other things and it works perfect