Wiseco B5000 30 x 72 x 19mm Main BearingWiseco B5000 30 x 72 x 19mm Main Bearing Wiseco main bearings are manufactured by many of the same suppliers to the OEMs, including leading Japanese manufacturers, and are inspected for accuracy, function, and cleanliness for efficient and reliable service. Manufactured by the same suppliers to OEMs, including leading Japanese manufacturers Precision machined and finished with high quality materials Inspected for accuracy, function, and cleanliness