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  Protect the warranty on Kohler products, always look for the Kohler GENUINE Parts logo. Kohler GENUINE Parts are designed by Kohler engineers to maintain original product performance and promote product longevity.

  The Kohler K-1237539 is a genuine fill valve service kit used for repairing specific Kohler one-piece toilets.

  Toilet fill valve assembly, an authentic Kohler Genuine Part. Exclusively designed for specific Kohler one-piece toilets, including the San Raphael (K-3384 models), Rialto (K-3386 models), and Revival (K-3360 and K-3612 models). It is not a universal substitute for all toilets.