MGP (Marshall Genuine Products) CALIPER COVERS. ENGRAVED "MGP" LOGOTYPE FRONT CALIPER COVERS. ENGRAVED "MGP " LOGOTYPE REAR CALIPER COVERS. 1997-2001 Audi A4 Quattro Base (B5, 288mm Front Rotor). 1998-2001 Audi A4 Quattro Avant (B5, 288mm Front Rotor).