Complete Kit: Everything you need in one box, includes shower cartridge, 104421 cartridge puller removal tool, retainer clip, and lubricating grease 104421 Cartridge Puller Removal Tool: Removes even stuck cartridges safely, grips the cartridge securely and extracts it without scratching or cracking your plumbing Perfect Fit: Engineered specifically for PosiTemp systems, wrong‑size cartridges cause leaks, low pressure, and temperature instability Ideal Replacement: Avoid replacing entire plumbing fixtures, swapping just the cartridge and restores full function Your DIY solution: Includes everything for a stress‑free repair, open the box, follow the steps, and fix your shower with confidence This replacement cartridge kit is specifically designed for one‑handle Posi-Temp tub and shower faucets – one of the most common valve systems in American homes. If you’re dealing with a constant drip, weak water pressure, sudden temperature shocks, or a stuck handle, the cartridge is almost always the culprit. What’s included in this complete kit: replacement cartridge 104421 cartridge puller removal tool (for safe extraction) Retainer clip (secures cartridge in place) Lubricating grease (ensures smooth installation) What problems does this solve? Leaks & drips – Waste water, raise bills, and stain your tub. Low or fluctuating pressure – Ruins your shower experience. Sudden hot/cold bursts – Dangerous and uncomfortable. Stuck, corroded old cartridge – Risk of damaging your valve. Missing parts or wrong tools – Delays and extra trips to the store. What benefits will you enjoy? Save money – Avoid a $150‑200 plumber visit. No need to replace the entire faucet ($300‑500). Save time – Complete the repair in under 30 minutes with the included puller tool. Restore comfort & safety – Consistent water pressure and temperature every shower. DIY confidence – All parts and tools are in one box. Just follow the steps. Why choose this kit over a basic cartridge alone? Most sellers give you just the cartridge, leaving you to struggle with a stuck old core using pliers – which often damages the valve. Our kit includes the 104421 puller tool, specifically designed to remove even the most stubborn cartridges safely. We’ve also added the retainer clip and grease, so you have a true all‑in‑one solution. Whether you’re a homeowner, a landlord, or a DIY enthusiast, this repair kit lets you fix your shower quickly, affordably, and with lasting results. Stop the drip. Restore the pressure. Take back your shower – all for less than the price of a service call.