This is a replacement graphite gasket by Skyline Emissions Inc. It is used on DPFs and DOCs on Volvo/Mack D11/MP7, D13/MP8, and D16/MP10 engines. This gasket is applicable with both Skyline and OEM part numbers. <BR<BR Applicable Skyline Part Number:<BR A-VPTH-VN1206<BR<BR Applicable OEM Part Numbers:<BR 21212426, 21212428, 21212429, 21212431, 22810502, 22810503