04-9163 Retro Fit Ballcock Replacement with Diverter for Kohler Brand Toilet

The ball cock replacement for the Kohler Rialto seems to be a common problem. Anyone who has had this brand of toilet knows that after a period of time it develops a chronic failure of the diaphragm to stop putting water into the tank. The chronic hissing noise and loss of water is only cured by replacing the entire assembly. I have tried replacing the floater, the flapper valve, and individual parts. There is no solution other than biting the bullet and replacing the entire assembly. I read the reviews and went ahead and bought the original coal or replacement. Expensive but I figured get the original equipment manufacturers product. After going through a rather difficult installation where the tubes were difficult to use, cumbersome to insert, and the water inflow tube needed trimming to make it fit, the toilet still had a mild but persistent hissing and leak from the diaphragm that did not cut off when the floating ball reached the top of the fill line. I decided to give this one a go despite some negative reviews. Yes, they have replaced some of the brass with plastic. And, the tubes are not quite as thick and as rigid as on the original Kohler. Having said that, the installation was a breeze, and after turning the water back on the system worked perfectly. I adjusted the fill line. Screwed on float ball, and the toilet fills and flushes perfectly. May be I was lucky on this one and unlucky on the Kohler. However, from my personal experience, this one was less money, easier to install, work better

The fill valve assembly I got from Lasco was very good quality and replaced the OEM replacement that was damaged in installation. The aux fill hose on the Lasco is a more flexible design that was easier to install. The Lasco valve worked well initially requiring only minor adjustment.

Works can't figure out the fill valve. Not sure if it's defective.

My home has (3) Rialto toilets. Over time, two of them had Fill Valves replaced with the $70-90 Kohler-84499-1B1X-Conversion-Kit. Those worked well. For the 3rd toilet, after seeing so many other Fill Valve replacements for other non-Rialto toilets, Ended up replacing with the LASCO 04-9163 Retro Fit Ballcock Replacement. The Lasco is working - still a little hiss - but not quiet like the Kohler 1B1X.

Good quality, works well and reasonably priced.

What an exercise in frustration. As with some other reviewers I was unable to ever get the bowl level up to the seal level despite Many attempts, tweaks, review of instructions, ... Also, the fill valve was Very noisy; much much louder than the Kohler model it replaced. Just totally unacceptable. I ended up buying the Kohler model (K-84499, which includes the flush value (that I didn't need)). It costs 3x as much, but when I installed it I had no problems with the tank level, the bowl level, or the noise. I also compared the dimensions of the two. The Lasco was noticeably shorter, both overall and from the tank level seal to the top. Many of the Kohler parts are brass; the Lasco is plastic. Your mileage may vary.

Hesitant because I thought I should purchase OEM, but it worked just fine. Default settings for water height and such were just about right. in the photo is the unit replaced.

I've got 3 older toilets from Kohler and these work just fine. Easy replacement with just removing a bottom nut, pull out the old assembly, replace it, tighten the nut and add the water line. Easy Peace. Worth $35.00 all day long. I used the old diverter to the bowl also. Fit fine.