1756C Replace Gerber 98-689 Cold Lavatory / Sink Stem For Gerber Brand Lavatory / Kitchen Faucets. If your faucet is leaking, you can repair it yourself. Use this cartridge to repair your faucet and save. No need to replace the entire faucet. Return your faucet to like new condition with the Cold Stem for Gerber Lavatory & Kitchen Faucets. The metal construction provides strength and durability. This stem includes a seat.