Grohe 46374000 Replacement faucet ceramic cartridge, Chrome

This cartridge fit our Grohe bathroom faucet and functions perfectly. The sleeve that comes with it didn't fit, but the cartridge itself works fine inside the original sleeve. I proactively purchased a set of different size shower valve socket wrenches to be able to properly remove & replace the retaining ring that secures the cartridge. It can be quite a task researching/locating the proper replacement cartridge for older Grohe faucets (there are SO MANY different models that can look similar); but it is worth the effort to continue using existing Grohe faucets. They are among the best. Ours were installed in 1994 and they all still work great.

This Cartridge replaced the original on a Grohe Parkfield Kitchen Faucet, Model #30-213. The faucet was installed in October 2017. We started noticing a leak at the base where it meets the countertop, and around the bottom of the handle. The leak would then flow to the inside of the cabinet below the sink, making a mess. I replaced the original cartridge with this one, and no more leaks. It was easy to do. After removing the Handle, You could see a water stain inside there, which proved that the Cartridge was leaking. You may want to remove just Your Handle and look inside there, to prove the Cartridge bad. After seeing a few Videos on YouTube, and the MFR Website, it appeared to be easy to replace. I also looked at the MFR's instructions that came with the replacement. They all stated that You need a 32MM socket to remove the cartridge. You do. That is a large socket for those that may not be aware. I had one already...being a retired Mechanic. A regular Mechanic type socket will work...no need for a Special Plumbing socket. You can also use a 1 1/4" socket as well. I would recommend using a 6-point socket, vs. a 12-point socket. But either should work. I will also point out that sockets these sizes, generally require a 1/2" Drive Ratchet, which many may not have in a home toolbox. If that is the case, a 3/8" to 1/2" Drive Adapter is available at just about any place that sells tools for just a few bucks. As well as the needed sockets, if You don't have one. It is very important to make certain that the New Cartridge lines up correctly inside the faucet. Look at the holes inside the faucet and look at the cartridge. You will see how it should line up, and the numbers on the Cartridge should be close to the top, as You look down. It's not hard at all. If this faucet hangs around our kitchen for a while, I figure that the Cartridge will need replacing approx. every 4-5 years. Maybe sooner...We shall see. Don't Forget to Turn the Water Off

Our faucet is almost 10 years old. There's a good video on the internet on how to swap out this cartridge. Tips for what you may encounter on an older faucet: Set screw: If your handle's set screw (3 mm allen head) is frozen (like ours was), shoot some WD-40 in the hole, Put a paper towel down and let it drip out. Let it sit for about 30 min. The screw is upside down, so make sure you are turning the allen key counter-clockwise. If you get the set screw to budge, keep going back and forth, then give it another shot of WD-40. Let it soak for a while, then repeat the back and forth until it wants to loosen. I removed the set screw completely. Handle: Mine would not budge. I used a piece of heavy plastic and tapped on the end and sides of the of handle. Use both hands to wiggle the handle between taps. When it finally popped off, the inside of ours was full of gunk. I put the set screw back in and filled it with CLR. Let it soak then used a toothbrush to clean it up the best I could. Money saving tip: The nut that holds the cartridge in place is 32mm. A conventional socket is too thick. The Grohe socket is $68. I went to Harbor Freight and bought a set of five "Shower Valve Sockets" for $12. They are not metric, but the 1 - 9/32" socket worked fine. The old cartridge: Our faucet had a copper cartridge sleeve, so the black plastic sleeve that it came with it did not work. It was too big. It must be for other models. I put the included O rings on this copper sleeve. Look inside the faucet's cartridge hole and make sure the three small silicone seal rings from the bottom of the old cartridge are not stuck inside. If you don't fish those out, the new cartridge will leak. Reattaching the handle: You may have to turn the new cartridge's white plastic tip 180 degrees to enable the handle to sit flush against the faucet body again. I had to. To do this, use a Philips screwdriver to remove the screw, Flip the tip 180 degrees, then screw the screw back in. That's all I got. Good luck with your cartridge swap.

This cartridge which matches the one I was replacing (46.374), leaks all over the place. Poorly manufactured compared to the one from 2019 (Original). And if you buy it and it leaks you are on the hook to pay for shipping back to Slovokia.

Works for my K4 single handle Grohe Kitchen faucet. However, Must be careful not to use a regular 32mm Socket to try and get the K4 Cartridge retaining ring out. It is metal and a regular 32mm socket with chamferred designmay round the corners while trying to get retaining ring out. Also best to use some CRC penetrant solvent before attempting to remove. Found best tool for the job is following: Faithfull FAISPBOX2732 Tap Backnut Spanner 27 x 32 mm, Tommy Bar$20 on Amazon. The retaining ring which comes with the Grohe replacement cartridge is plastic. Works Better if you reuse the old metal one I found.

It worked!!!! The installation can be confusing because the instructions are only pictures with little to no text. I had to try a few time, using different combinations of things to get it to work without leaking but eventually by just using the cartridge and the old mounting bolt, it all came together. Was not easy to put in.

My home came with several Grohe fixtures, two of which I have had to perform maintenance on because of leaks. Grohe customer support has been helpful to identify the model and the required part(s). The experience from there has been subpar for me. I bought this part for a leaky bathroom faucet. As others have stated, the instructions are atrocious. You need a 32mm socket to remove and install the original part. That is not something your average consumer owns. If you want to pay about the same as this part (~$60) you can buy Grohe's socket. That is an outrageous cost considering you can buy a 32mm socket to use with a 1/2 ratchet for under $15. In any event, to make matters worse, as others have mentioned the black threaded outside plastic ring has a crusty blue green substance in the thread, presumably to prevent leaks, but makes screwing this in potentially impossible. The lip for the 32mm socket to seat is small and plastic. With the gunk in there it was so difficult to screw in I was starting to round the edges of the plastic fastener. Worried I'd round it out and never be able to get it removed if I ever had to take it apart again for another leak I used the original metal fastener instead. Despite seating everything multiple times and following the terrible directions the faucet handle still sticks up slightly above where it should so I am not sure if there is a slight fitment issue. Either way the part is installed and I have had no issues so far. Based on my experience with repairing Grohe, if I ever need to purchase a faucet, I'd try another brand.

Purchased this after the replacement Grohe sent (due to lifetime warranty) not only fell apart but a piece was 2 mm too large. Illustrated instructions were not very helpful. Too bad Grohe doesn’t have online tutorials. Did watch a random online video, which was very helpful. Easy fix, and thanks to another reviewer here I knew immediately how to flip the handle. After installing, the handle range was limited, so I was not getting much hot water. The black rotational limit stop pops off, and after some trial and error I got a good range of hot and cold. Again, too bad there were not clearer instructions included or available online.