Brake Disc. Mity are committed to sourcing parts of OE quality or beyond, that’s why thousands of professionals trust Mity parts. Cross Reference: OE: 1815600, 2226521, 2527114, KK312A315BA, BK312A…. We are committed to keeping our prices as low as possible, and protecting our customers with long guarantees. This product comes with free 30-day no quibble returns (UK only).