American Standard 047107-0070A Selectronic Toilet Flush Assembly, 5.4 in wide x 0.7 in tall x 9.8 in deep, Unfinished

Well made and easy to install. The Lexington flushes like new.

Did not use this device as it did not come with a return spring. - So instead I bought a replacement from Screwfix for UK Syphon system which was supplied with return spring - works beautifully!

Perfect fit for my old model American Standard. Easy to install. Don’t use any bleach type product in the tank as a cleaner. The rubber components will eventually degrade. Get the entire kit, and replace all components.

This was purchased to replace the original equipment and it was awesome. Fit perfectly and easy to install. Every flush is now twice as satisfying as this flapper executes the operation perfectly and consistently.

It’s amazing that the flapper valve assemblies on our two American Standard one-piece LowBoy toilets would last for almost 40 years without replacement. Even the ceramic toilets themselves still look like new… good quality! However, both toilets began to leak about the same time, apparently because the surface of the soft rubber flapper disk was disintegrating. Amazon.com to the rescue… the correct parts for these old toilets were easy to find on the web site and delivery was amazingly fast with Prime. The parts received were in American Standard Genuine Part packaging (not a knock-off) and the high quality of the molded/machined plastic parts and gaskets was obvious. Removal of the old parts and installation of the new ones were quick and easy. The replacement immediately corrected the persistent leak problem and the toilets have been operating great for almost a month, so maybe I can expect another 40 trouble-free years from these toilets.Removal and installation were easy, but here are some notes that might be of use…If you own one of these toilets, you already know that the rubber-disk gasket and seat in the separate filler tube are the most likely things to wear out and cause leaks. The rubber disk deforms and will no longer seal and/or the sealing edge of the (plastic or brass) seat can erode from water flow and grit in the water (hard to see unless you remove the seat for close visual inspection). Make sure that these items are sealing properly before blaming the flapper assembly.A good way to determine what is causing your leak is to turn off the water at the inlet pipe to the toilet, check the water height in the tank and then come back later and see if any water has drained out of the tank. If the water level goes down, you will have to replace the flapper assembly (if the assembly is still relatively new, you can purchase the rubber flapper disk separately, which might fix the problem at a lower cost).Makes sure you order the correct flapper assembly. There are two types, with the only apparent difference being where the beaded chain attaches to the large cylinder on the flapper. P/N 047107-0070A (this review) has the chain attached near the top on the side of the cylinder, but. P/N 047250-0070A is closer the center of the side. There is also another (after market) flapper shown on the site that apparently has a brass seat (not plastic) with a rubber flapper mating surface and is separate from the actual flapper assembly – they are screwed together in the final assembly. Order the type that looks like yours in the pictures.Use care when you remove/install the beaded chain from the clip on the flush handle rod. If you damage the clip, there are NO new clips included with the replacement assembly.Do not attempt to remove or install the seat portion of the assembly without first removing the flapper assembly by carefully spreading the plastic attachment (hinge) tabs on the seat, tilting the flapper assembly to disengage one of the cylindrical pegs and then tilt the assembly to disengage the other peg and lift the assembly out. You will now have free, unobstructed access to the three screws that hold the seat in place in the bottom of the toilet tank.The seat portion of the assembly is held in place with three large (stainless steel) screws that fit into threads of rectangular (brass) blocks. All new ones are included with the replacement. The old screws will probably be frozen in place. However, the seat can still be removed by using a large #2 Phillips screwdriver with firm downward pressure to turn the screws and blocks together. A 180 degree turn of the screw will rotate the block out beyond the ceramic lip holding the assembly in place in the tank. Do this on all three screws and the entire seat will lift out easily. Before installing the new seat, clean-up the surface where the old rubber seat gasket was in contact with the tank.Put all three screws into the appropriate holes in the new seat and screw on the threaded brass blocks enough to hold them in place, but not too loose so they might fall into the toilet during installation. Rotate the blocks inward so that the assembly can be inserted into the hole in the tank (remember to install the large rubber ring gasket on the seat assembly before installation). After the seat is inserted, rotate to align the two tabs that will hold the flapper assembly into the correct location (left side and parallel to the tank sides). With your fingers, carefully rotate the blocks outward under the ceramic tank edge until they are perpendicular to the edge and then carefully snug-up the three screws so the blocks will not rotate during final tightening. Now, gently tighten the screws sequentially in small increments until they are all uniformly snug. Do not over tighten them or you may crack the ceramic tank.Now all that is left to do is reattach the flapper assembly by carefully spreading the seat tabs to accept the hinge pegs of flapper assembly and connect the beaded chain to the clip on the flush handle rod. The location of the chain may need to be adjusted so that it tight enough to properly actuate a flush, but not too tight to cause the flapper to lift and leak.Open the water valve to the tank and refill. Adjust the chain as necessary and check for leaks. Put the cover back on the tank and be sure the flush lever will actuate a flush correctly and the flush duration is long enough to empty the tank. Some reviewers have stated that the flush length is too short, so they have had to add small weights inside the cylinder that is filled with water and then empties through a metering hole to increase the flush time. I did not have this problem. Happy flushing !!!!