Can ST776EA tank work on CST743E toilet?

[Buaa]

I broke the tank of my CST743 toilet. Ordered a new tank but the seller sent me the wrong item which is ST776EA. They told me ST776 can work on my toilet however. Now before I unpack the tank, can anyone here confirm that is the case? Thanks a lot for the input.

 

[Terry]

Yes, the ST776EA works on the old C743E and C744E bowls.
The 7/8" nut on the supply line is a tight fit if if comes with the ridges. I suggest installing the supply to the tank first, and make sure the ridges are in place that doesn't interfere, or pick up a supply with a smaller OD without the ridges.

I have trimmed the taller ridges off before.

 

[Sponsor]

 

[Buaa]

Thanks Terry. That helps a lot.

 

[Buaa]

Thanks again. I managed to install the tank successfully. I was really really concerned/careful when I tightened the two nuts to secure the tank. I felt that it would break any time but eventually it worked. Hope it can last.

I did not trim the ridges though on the water supply line. It was blocked a bit but it went through finally.

Thanks for the help, Terry. Really appreciate it.

 

[Terry]

It should be fine. I've already installed a few of the new tanks on the old bowls.

 

[Markiz]

I broke the tank of my CST743 toilet. Ordered a new tank but the seller sent me the wrong item which is ST776EA. They told me ST776 can work on my toilet however. Now before I unpack the tank, can anyone here confirm that is the case? Thanks a lot for the input.

Have you noticed any improvement in the performance upon replacing the ST743E tank with the ST776 tank?