How to replace a Moen stem cartridge hot or cold in a bathroom sink.
First things first shut off the hot and cold water then proceed on removing both handles use proper tools it have if not just follow the instructions on the video.

HERE IS THE WEB FOR THE PART

MOEN 1224 Replacement Faucet Cartridge Kit Fits Most Double Handle Moen Faucets and Tub/Showers https://www.amazon.com/dp/B00002N97S/...