PFR57-530 Para montar en vehicles with a single gearbox bush (pieza original con núm de serie 99637505505) in the end casing, including all 3. 4 models, 3. 6 y 3. 8 Manual modelos (up to 2010) except for Turbo GT2 y GT3 models. PFR57-531 Para montar en 996 y 997 vehicles with the twin gearbox mounting bracket (pieza original con núm de serie 99737503303) at the end of the gearbox, as fitted to all 3. 6 y 3. 8 Tiptronic models, Turbo modelos Manual y Tiptronic, GT2 y GT3.