Review on Moen 4000 Faucet Cartridge: Enhance Your Faucet's Performance with the Ultimate Replacement Part! by Steven Ali

Worked well. I couldn't find an exact replacement for our dripping Moen single handle shower faucet. Plummer's solution was to remove the faucet and put in an outer tube! Someone told me about the cartridge and found this one and another similar, but not from Moen. I took a chance and they both worked in my two leaky pipes! No more drips and it only cost me $10 plus installation. It's been over 3 months and he's still going strong.