Right now there are 42 deals from Amazon Resale, formerly Amazon Warehouse Deals, in Automotive › Replacement Parts › Sensors › Detonation. 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: Delphi, Dorman, Beck/Arnley, GM GENUINE PARTS, TRQ, Standard Motor Products, A-Premium, ACDelco. Every item is a one-off, so the stock moves all day and new deals keep arriving.