This is a replacement graphite gasket by Skyline Emissions Inc. It is used on DPF and DOCs used on Cummins ISC/ISL engines. This gasket is applicable with both Skyline and OEM part numbers. <BR<BR Applicable Skyline Part Numbers:<BR A-CEXH-CJ1201, A-CEXH-CJ1202, A-CEXH-CJ1203, A-CEXH-LJ1204, A-CEXH-CJ1205<BR<BR Applicable OEM Part Numbers:<BR 4965286, 4969838, 3976606, 3978026, 3999661, 3999662, 4969839, 2871463, 2871459