BMW Genuine Sound Insulating Front Sound Insulation Door Sound Deadener 320i 323i 325i 325xi 328i Z4 2.5i Z4 3.0i Z4 3.0si Z4 M3.2 Z4 3.0si Z4 M3.2 BMW Genuine Door Sound Deadener Please see Product Description below for vehicle compatibility. Manufacturer Warranty: 24000 miles or 2 years