This is a replacement fiber gasket by Skyline Emissions Inc. It is used on DPFs and DOCs on Navistar Maxxforce 7/DT/9/10 engines. This gasket is applicable with both Skyline and OEM part numbers. <BR<BR Applicable Skyline Part Numbers:<BR A-NVXH-MJ1222, A-NVXH-MK1223, A-NVXH-MN1027, A-NVXH-MK1221<BR<BR Applicable OEM Part Numbers:<BR 2594131C91, 5010832R91, 2594165C91, 5010830R91, 3712647C91, 2604430C91, 2613113C91, 2612521C91, 5010853R1 5010843R1, 2605039C91, 2594369C91