Right now there are 144 deals from Amazon Resale, formerly Amazon Warehouse Deals, in Tools & Home Improvement › Plumbing › Faucet Parts › Cartridges. These are inspected returns and open-box items that Amazon sells and ships itself. WarehouseHunter puts each one next to its current new price, so you can see what you save at a glance.

Brands with the most offers here: Moen, Danco, DELTA, American Standard, Pfister, GROHE, Kohler, hansgrohe. Every item is a one-off, so the stock moves all day and new deals keep arriving.