I've got a 1999 gs400 with 204k miles, its time to do the radiator and replace some radiator hoses. I've been searching for a good aluminum radiator and some silicone hoses to replace with.

I've seen a handful of posts referencing a lack of a drop-in aluminum radiator or silicone radiator hoses. Upon further investigation it seems to be the case that Koyo does at least offer a copper/brass radiator for the Toyota Aristo (part number: KA010647), and given that its the same platform as the gs, and the gs300, 400 and 430 seem to all use the same radiator part, this should fit right?

I've also read that people will modify a radiator for a Supra as well, would the output and input locations be the same as for the 2GS radiators?

Also I seem to be able to find HPS silicone radiator hoses for the gs430/sc430 (part number: 57-1828-BLK), as far as I can tell the radiator hoses are the same as the gs400 as well. In the same vein, I would expect these same hoses to work on an ls430 as well, I have one and I cannot tell the difference in the hoses between the two.

Can anyone confirm if this is actually true or am I just off my rocker here, I'm just trying to weigh my available options.

 

The Koyo radiator is for the twin-turbo Aristo V300 only, the upper inlet location is unique to the turbo models.

 

Ahh, that's unfortunate. Thanks for the information though!

 

There are several all aluminum 3 and 4 core radiators available for your GS400. The Supra radiators are difficult to retrofit because the lower mounts are set much wider than the ups/160 chassis. If you wanted to get a really nice mishimoto full aluminum radiator then your best option would be one for the IS300, they don’t exactly drop right in, but it only involves minimal modification. But that’s a pretty expensive option compared to one of the no-name options you’ll find on eBay or wherever.

 

https://www.ebay.com/itm/29533211683...mis&media=COPY