Does your car door feel loose or not stay open properly? This is a brand new replacement for the left front door check, also called a door arrester. The OEM part number is 79380-3K000 (or 793803K000). It's what controls how your door opens and holds it in place. Before you buy, it's super important to check that this number matches the one on your old part, or provide your VIN to be sure. We recommend having a professional install it, as it involves door hinge work. The product comes with a one-year warranty for peace of mind. Your package includes just the one arrester. A simple fix for a common wear-and-tear issue.