Cylinder Bore Diameter
| Cylinder Bore | Standard (A) The cylinder classification, A, B or B+ , is stamped on the cylinder face and is specified for each cylinder. They can all occur in the same cylinder block. | 90.000 - 90.012 |
| Standard (B) The cylinder classification, A, B or B+ , is stamped on the cylinder face and is specified for each cylinder. They can all occur in the same cylinder block. | 90.003 - 90.020 | |
| Standard (B+) The cylinder classification, A, B or B+ , is stamped on the cylinder face and is specified for each cylinder. They can all occur in the same cylinder block. | 90.011 - 90.030 | |
| First Oversize | 90.500 - 90.512 | |
| Second Oversize | 91.000 - 91.012 |