This is a replacement sealing ring gasket by Skyline Emissions Inc. It is used on DPFs and DOCs on Detroit Diesel/Mercedes-Benz Series 60, MBE 4000, DD13, and DD15. It is also used on Volvo/Mack MP7 engines. This gasket is applicable with both Skyline and OEM part numbers. <BR<BR Applicable Skyline Part Numbers:<BR A-DDXH-DN1501, A-VPTH-VN1201, A-VPTH-VN1207, A-VPTH-VN1209<BR<BR Applicable OEM Part Number:<BR A6804910594, A6804910294, A6804908692, 21048577, 21804785, 20992181, 21817835, 85000899, 85003793, 85125682, 21395825, 85124613, 21471269, 85124653, 22342601, 22761989