Review on Delta RP19804 Shower Cartridge Assembly Replacement for 1300/1400 Series Tub/Shower Valves (1993-2007) - Compatible with Delta Select Monitor Valves by Todd Look

Delta said they would ship me this warranty part as I am the original owner but never did. 4 months later I'm still waiting for my warranty cartridge. Delta sent me the hood that came with this unit within a week. Item purchased and repaired. The lifespan of these cartridges is 5 to 6 years, even with maintenance to clean and replace the rubber seals. It appears that Delta's design/use with this cartridge requires constant replacement and they are no longer worth their item.