[Roader]

Ditto Paul and Bill. RockAuto has it $10 cheaper but of course you'll pay shipping. I didn't do any seals @150K because none were leaking.

Unsolicited advice: Loosen and remove these two bolts before you drain the coolant or even jack the van up. That way if you run into that common problem you won't have a partially disassembled van sitting in your driveway or garage.

 

[Roader]

That Aisin kit has all you need for a TB/WP change. If you need new alternator or PS pump belts, get them. The T-stat is on the other side of the engine; no need to change it unless it needs it, and there's little advantage doing it at the same time.

 

[Roader]

I was actually going to ask about the radiator but figured that was too much for one post. Aside from the T stat and radiator, what other parts are necessary?

The thermostat housing/tube:

SKP SK9025123 {#163210A040} Thermostat Housing $16.99​

 

[Roader]

Gotcha. I just called the dealership and it's $30 per gallon!!! Is there a reputable place to get this online or a solid alternative by chance? Thanks!

I've used Zerex Asian Vehicle antifreeze for years in my Toyotas.

 

[Roader]

Are there any special tools needed for this job that a mechanic wouldn't likely have.

None.