Question: what the difference between moen cartridge 1222b vs 1222?
Answer: Moen 1222 Vs 1222B Difference There is absolutely NO difference between the Moen 1222 vs 1222B replacement cartridges. They are both the replacement part cartridge for the Posi Temp Moen shower valve. They are made from the same parts, the only difference is their packaging and model number.