Delta Plastic Faucet Cartridge in the Faucet Stems & Cartridges department at Lowes.com
09001-22C Faucet Cartridge – American Bath Factory
Delta Faucet RP47422 , Two Handle Ceramic Stem Cartridge for (Pair) - Replacement Faucet Delta - Amazon.com
Kerox PBR 40 Faucet Cartridge, Replacement Cartridge Compatible with La Torre, Cascade & Nobili, Single Lever Shower Tub Repair, Tub Faucet Cartridges, Kitchen & Bathroom Faucet Cartridge Replacement - Amazon.com
American Standard 2-Handle Kit and Bath Cartridge 994053-0070A/H - The Home Depot
Advance Tabco K-00A Faucet Cartridge with Handle - 2/Set