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Questions and Answers for KOHLER Highline 1.6 GPF Single Flush Toilet Tank Only in Biscuit

Internet #100406493

Model #K-4645-96

  • Toilet tank only - Toilet bowl sold separately
  • Combine with K-4304 or K-4304-L to create K-3493 Highline toilet
  • Please see K-3493 highline pressure lite toilet for full details

Questions & Answers

20Questions
caret
Q:Can I use the K4645-0 toilet tank to replace my K4404 white toilet tank?
by|Mar 26, 2024
1 Answer
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A:  Hi Thomas, this is Sarah with Kohler Customer Service. I am glad to address your question. The K-4645 and K-4404 tanks are not interchangeable. For additional assistance, please call our team at 1-800-4KOHLER (M-F; 8am-5pm CST). Thank you for choosing Kohler.

by|Mar 26, 2024
    caret
    Q:Will this replace a K-4620-DA tank? What other tanks do you offer that would replace that tank?
    by|Mar 17, 2024
    1 Answer
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    A:  Hi RetiredNC, this is Vikrant with Kohler Customer Service. I am glad to address your question. Tank model 4484-0 could be an alternative however that also depends on your toilet bowl's model number. Please contact us at 1-800-456-4537 for assistance. We are available Monday - Friday, 8 a.m. - 5 p.m. CST. Thank you for choosing Kohler.

    by|Mar 17, 2024
      caret
      Q:Replace older high flow toilets with 1.28 gpf Cimarron chair height toilets. Having sewer cloggings that didn't exist in the prior 10 years. Sewer lines snaked with camera with no problems. Run sink water with flush and no problems. Suggestions?
      by|Nov 6, 2023
      1 Answer
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      A:  Hi twiddlebug, this is Sarah with Kohler Co. I am very sorry to hear about the clogging. Excessive clogging may indicate an issue with venting. Please call our Customer Service team at 1-800-4KOHLER (M-F; 8am-5pm CST) for additional assistance. Thank you for choosing Kohler.

      by|Nov 6, 2023
        caret
        Q:WILL THE K-4645-0 FIT A K-22661-0
        by|Mar 30, 2023
        1 Answer
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        A:  Hi John, my name is Meli with Kohler Co. I am happy to assist with your question. The tank K-4645 is only compatible with the bowl K-4304. Thank you for choosing Kohler.

        by|Mar 30, 2023
          caret
          Q:Will this fit a Kohler K-3979-0 Highline bowl?
          by|Mar 3, 2023
          1 Answer
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          A:  Hi Jason, this is Lisa with Kohler Co. I am glad to answer your question. The reference toilet tank will only be compatible with the following bowl model numbers - K-4304, K-4303, K-4327 and K-4305. Thank you for choosing Kohler.

          by|Mar 3, 2023
            caret
            Q:Can this tank replace a Koehler tank 4436?
            by|Nov 2, 2022
            1 Answer
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            A:  Hi, my name is Meli with Kohler Co. I am happy to assist with your question. The K-4645 will not replace the K-4436. Thank you for choosing Kohler.

            by|Nov 15, 2023
              1 found this answer helpful
              caret
              Q:There is a crack in the back of my toilet tank. The inside of the tank says K-4620-DA, 1.6 GPF. I'm not sure how old that model is, can I still get a replacement tank without buying the bowl too?
              by|Jul 12, 2022
              1 Answer
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              A:  Lottie, my name is Jessica with Kohler Customer Service. I am happy to assist with your inquiry. I do apologize, K-4620 has been discontinued and there is not a direct replacement available; both the tank and bowl would need to be replaced. Thank you for choosing Kohler.

              by|Jul 12, 2022
                caret
                Q:Thanks so much for your response, Sarah. I’m afraid I’m confused, though - isn’t this the K-4645 tank? That’s the model number listed on the page. If it’s not, where can I find the K-4645 tank to pair with the Barrington 4327 bowl?
                by|Mar 16, 2021
                1 Answer
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                A:  Hi Turkeyrunner, this is Sarah with Kohler Customer Service. I'm glad to address your question. If you have the K-4327 bowl, this will work with the K-4645 tank. The original question referenced the K-4404 tank. This tank, when used with some older bowls, may not be a direct replacement to the K-4645 tank. If you have confirmed that your original bowl is the K-4327, the K-4645 will be a compatible replacement. I hope this clears up any misunderstanding! Please call our team directly at 1-800-4KOHLER for additional assistance. Thank you for choosing Kohler.

                by|Mar 17, 2021

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