Home Shipping Returns About Us Contact Us Visit Our Store 4x Genuine 42mm Brembo Caliper Dust Seals Main Description 4x Genuine Brembo Brake Caliper 42mm Dust Seal. Part number: 20 4872 47 Please check other items for different sizes of seals. You can contact us via e-mail; if you need advice on how many seals you need and what size.