Year, make and model fitment is right about 94 percent of the time. That last 6 percent is what fills our returns shelf, and it is concentrated in a small number of part categories where a factory option code changes the part without changing anything you can see from the outside.
Two cars that are both 2021 models of the same trim can leave the factory with different axle codes, different brake package hardware, different suspension part numbers for a cold-weather or tow package, and different headlight housings if the model got a mid-cycle facelift. None of that is exposed by year, make and model. All of it is exposed by the VIN.
The categories where we insist on a VIN before shipping: suspension components, brake lines and calipers, exhaust on any platform sold with more than one tip configuration, axle and differential components, ECU tunes, headlight and taillight housings on facelift years, and anything sold as a sport or performance trim part.
This is also why we do not sell universal-fit anything in those categories. A universal part list is built by aggregating what usually fits. It cannot know that your car has the heavy-duty tow package that changed the rear brake line length by 40 millimeters.
Practical advice: bookmark our fitment tool, run the VIN before checkout rather than after the box arrives, and take a photo of the part you are replacing before you remove it. Our fitment desk answers VIN questions by phone during shop hours, and verification is free on any order over $250.
