Right now there are 520 deals from Amazon Resale, formerly Amazon Warehouse Deals, in Automotive › Replacement Parts › Exhaust & Emissions › Catalytic Converters & Parts. 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: PHILTOP, A-Premium, KAX, Walker, SCITOO, Dorman, AISIN, BDFHYK. Every item is a one-off, so the stock moves all day and new deals keep arriving.