BMW E36 3-Series or M3 Front Stealth Kidney Grills Matte Black (1997-1999) Stealth Grilles are made from impact resistant long life ABS polymer and are precision crafted for perfect OEM fit. treet comments on these grills are Stealth Grills have an impressive appearance that looks like a million but costs a fraction. Stealth Auto BMW Grills for a perfect fit and beautiful matte black finish