Thank you for your question. There are multiple stem unit assembly choices for different lavatory sink faucets. We recommend to find your model number and date of installation to pinpoint which stem unit assembly/cartridge and/or seats and springs work for your particular faucet. You may also contact us directly on our Delta Customer Service line at (800)345-3358 for further assistance. We are available Monday-Friday, 7am-7pm, CST and Saturday, 8am-5pm, CST. You may also email at email@example.com.
Date published: 2018-03-13