This is a left door sill for the 2003-2012 Mercedes-Benz R230 SL500, SL550, SL55, and SL63 AMG models. It is compatible with manufacturer part number 2306801735. The door sill comes in a sleek black color and is a direct replacement for your old one, no cracks. As this is a used part, expect some minor scuffing and scratches.