This is a replacement metallic gasket by Skyline Emissions Inc. It is used on DPFs used on Caterpillar C7 and C15 engines. This gasket is applicable with both Skyline and OEM part numbers. <BR<BR Applicable Skyline Part Number:<BR A-CPXH-CH1408<BR<BR Applicable OEM Part Numbers:<BR 302-5204, 304-7578, 304-7579, 10R-6082, 291-8513, 294-8690, 10R-6085, 290-7307, 0117438