How do I know what faucet cartridge to buy?
How do I know what faucet cartridge to buy? Use a caliper or ruler and measure the cartridge. Do this by measuring from the base to the tip (from seat to splines). Pay attention to the length tier of your cartridge (Lengths range from 1–12). Next, identify the broach pattern with the broach chart (see page B-5). Are bathroom faucet cartridges interchangeable? Cartridges aren't interchangeable among different faucets, so if you decide you need a replacement, you need to know its part number so you can order it from your plumbing supplier or online. That number is usually available on...