Hello from Customer Service. I appreciate the blog comments and questions–keep them coming!

Every now and then, we get a call from a customer who wants to fix a dripping kitchen faucet. Now, we have a lot of faucets in our product offering, but one of the most popular faucets is the Coralais® kitchen sink faucet. It’s a great product, rinses a lot of spaghetti sauce off of plates, but sometimes a leak may appear. No worries, I’ll walk you through a quick fix.

Before you get started, you will need KOHLER Service Part Number GP30420, a 3/32″ hex wrench, and a half hour of free time.

Are you ready? Here we go…

  1. Turn off the water to your faucet and remove the plug button from the handle.
  2. There will be a small screw underneath the plug button. Loosen the screw to remove the handle.
  3. The bonnet will be the next part, looking like a dome with the top cut off. Unscrew the bonnet. It should remove easily by hand by turning counterclockwise to expose the valve and mounting nut. Remember “righty tighty, lefty loosely.”Bonnet on:

    Bonnet off:

  4. Firmly grasp the hub and spout and pull the entire assembly up and off the body of the faucet.
  5. The o-rings and bearings are found around the body of the faucet. Replace the o-rings and bearings in the same order they appear on your faucet and lubricate generously with the included silicone based lubricant.
  6. Now, you simply slide the spout back onto the body of the faucet and reassemble the remaining pieces.

Turn the water back on, check for leaks, and start rinsing those plates. Remember, if you ever need help, you can message us on Facebook or Twitter. And you can always call us at 1-800-4KOHLER. We’d love to hear from you.

For all your service parts needs, visit our Online Parts Store.


Since 1873, Kohler Co. has been improving the level of gracious living among its customers by providing exceptional products and services for the home. As a recognized global brand, Kohler leads the way in design, craftsmanship and innovation. Kohler's product offering spans across all price points, offering consumers a wide variety of options in kitchen and bath fixtures, faucets, and more.

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