Has anyone installed Gen3 OEM catalytic converter ?

Here is the complete removal and install manual for the Gen 3 exhaust including the catalytic converter.

 

I use Lisle hose clamp iers have like 6 pairs I cannot find them lately. That do make plastic versions though. Temu has .. this keeps all the water above in place so when you slide the first hose in place you can undo its clamp a little let some water run into the heat recovery jacket put the other clamp on as the water starts to drip almost on you and you essentially won't have to do any bleeding or any funny business. Most of these little pumps on the Toyota at least the ones I've seen and had out are pretty much like self-priming they look like a little spa circulation pump running dry should not hurt them at all actually they're mag drive a lot of them so running for a minute or two without water in them should not cause them any strife.

 

I don't know I've cracked a few of these pumps open especially the inverter pump and one of the heat recovery pumps and it looks like they're electronics package and the green board is housed nowhere near where it will be cooled by the water flowing through the impeller end and the impeller is a mag drive type of thing there's no shaft running from the motor through the plastic pump housing to the impeller It's done like a washing machine and I think those pumps can run dry for a few minutes without really any consequence but I'm not positive of that but it doesn't seem like coolant running through the pump head is going to cool much of the setup down but I guess it's possible. I think that's the selling point of some of these mag drive pumps I use them in ponds you know like out in people's yards.

 

And if you just use hose clamps the clamp off the water supply or hose clamp pliers you can keep all the water in the system right up to the hose clamp pliers so when you slide in the new converter and you slip on the pipes if you undo one hose clamp on one side let the water run through the bulbous part of the converter or the heat jacket start running out the other side just to drop or two undo your other hose block off plier slide the hose on the other side you should have like no air in that system practically maybe a tiny bubble and I mean small.