The most exposed part of the body side, and the first place corrosion starts on a car that sees winter salt.
Rocker panels and rocker mouldings sit along the bottom of the door opening, which makes them the most exposed part of the body side and the first place corrosion starts on a car that sees winter salt. Guards and mouldings are bolt-on; the panel itself is welded on most models, which makes it collision-repair work.
