The Insulation is an OEM part for Frigidaire dishwashers. It is designed to reduce sound during wash cycles and help create a quieter dishwasher experience. The sound insulation minimizes noise transmission by absorbing and dampening vibrations throughout washing. Causes of bad sound insulation can include breakdown of insulating materials over time, compression that reduces soundproofing density, or water damage or impacts. Symptoms of bad sound insulation include: Noticeably louder operations with minimal sound dampening Rattling, banging, or buzzing sounds emanating from the appliance Transference of vibrations that causes adjacent cabinets to resonate This OEM Frigidaire part is also compatible with Electrolux, Gibson, Kelvinator and some Kenmore models.Part Number 5304525043 (AP6989053) replaces 154858701, 154456902, 5304500768.