LASCO 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

Good quality, works well and reasonably priced.

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.

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.

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.

It does fill the tank and flush the rim for the most part. This has all the necessary bits to fit the weird rim flush in a Rialto. But the valve takes forever to completely shut off. Oh, and you need to use the old float ball. It doesn't distinctly close off like an OEM valve no matter how I adjust the float. At the end of fill it slows to a smaller and smaller trickle until eventually the valve closes completely. And I still haven't gotten the rimflush to a satisfactory flow rate.

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.

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.

We have 5 Kohler toilets from the 1980's. Got great support from Kohler and identifying what replacing the guts inside the water tank would cost. Kohler sells the kits for $240. The same thing is available online a little cheaper from Amzon. Why would I spend over $200 to update a 40 year old toilet? I can buy a nice new one for a $100 at Costco, $200 for a fancy one. Then I found this copy. It is all plastic, no brass. But it work fine. and costs only about $30 bucks. When installing it be careful to turn the stem so that the float does not hit the back of the tank. The hardest part of installation is access. Remove the 4 screws with a Philips Screw driver to remove the top of the system. This removes the float. Use an adjustable wrench to hold the screw on the bottom and unscrew the mechanism. Be sure you've drained the tank. Installation is straight forward. Screw it together.

Works good after few adjustments

didn't fit kohler toilet that seamlessly, had to kinda fudge it

Fit perfectly. Use the flexible tube for the bowl as provided. No need to use the existing one that came with the toilet.

Replace the worn out original.