Classification of main bearings

Fig 1: Identifying Classification Marking On Block And Crankshaft

Courtesy of VOLVO CARS OF NORTH AMERICA.

The marking is stamped on the cylinder block and crankshaft.

Fig 2: Identifying Classification Chart

Courtesy of VOLVO CARS OF NORTH AMERICA.

1. Classification cylinder block
2. Classification crankshaft
3. Cylinder block
4. Intermediate section