1.OEM standard, export to Europe,USA market 2.For Komatsu diesel engine: 6D125, 6D105, 6D108, 6D140,etc We could offer crankshaft oil seal for Cummins, Caterpillar, Komatsu engines, as follows: It.Part No.DescriptionDIMENSION(mm)Remark16151-21-4160Oil Seal150*180*17 26151-21-4150Oil Seal150*180*17 Komatsu Diesel Engine Crankshaft Oil Seal 6151-21-4160