thermal insulation cotton sound insulation cotton heat insulation modified 1996-2003 for BMW E39 520i 523i 525i 528i 530i 540i thermal insulation cotton sound insulation cotton heat insulation modified 1996-2003 for BMW E39 520i 523i 525i 528i 530i 540i. Sale price : $52.78 Category : Automobiles, Parts & Accessories