We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Kohler 1117210 flush valve kit in plastic housing

Kohler

Kohler 1117210 Replacement Flush Valve Kit 1.28 GPF

SKU CH-YK0E-C400Y

Replacement flush valve kit delivers 1.28 GPF water-saving performance for compatible Kohler toilets

  • Replaces worn flush valves to restore reliable flushing
  • 28 GPF rating reduces water used per flush
  • Kohler genuine part ensures correct fit for compatible toilets
  • New condition guarantees unused, factory-fresh components
  • First listed by manufacturer in 2021

Replacement Flush Valve Kit 1.28 GPF

The Kohler 1117210 is a replacement flush valve kit designed for toilets using a 1.28 gallons per flush rating. It serves homeowners and maintenance staff who need to restore proper flushing performance in compatible Kohler toilet models.

Kit contents and flush performance

The package includes the components required to replace the existing flush valve assembly. Installing the kit returns the toilet to its rated 1.28 GPF water consumption, reducing waste compared to older higher-volume flush valves.

Installation notes and common issues

Installation typically requires basic hand tools and access to the toilet tank interior. Difficulty can arise if the existing tank-to-bowl gasket has deteriorated or if the flush valve nut is seized, which may demand extra time or a replacement gasket not included in this kit.

How it compares

Measured against everything we stock in Single & Multi-Bowl Sinks, at today’s prices. Recalculated every night.

Price $19.99
Cheaper than about 70% of the 59 comparable items (median $29.99).

Specifications

Product
Brand nameKOHLER

Questions about this item

How often will the flush valve seal in the Kohler 1117210 kit need replacement under normal use?

The seal is built to last several years; plan to inspect it annually and replace it if you notice a slow leak or incomplete flush.

What performance limit appears first when the 1.28 GPF valve operates continuously in a busy household?

The 1.28 gallon per flush rating caps water volume, so the refill cycle becomes the bottleneck during back-to-back flushes.

Does the Kohler 1117210 kit add any audible noise or vibration to the supply line during all-day operation?

The valve closes quietly with a soft seat design, so normal water-hammer arrestors keep supply lines silent even with frequent use.

More in Single & Multi-Bowl Sinks

Similar items