GP800820 Kohler Rite Temp Pressure Balancing Unit Cartridge KOHLER GENUINE PartReplacement Rite-Temp pressure-balancing unit cartridgeReplaces KOHLER part GP500520Compatible with KOHLER shower valves K-304 and K-11748 platformsLatest Rite-Temp technology maintains even temperature, preventing water pressure fluctuations and protecting the userResistant to aggressive water conditions providing long-lasting performance