This pipe plug is sold in a 5-pack and functions as an oil pan drain plug for engine applications, built as a replacement fitting Mack platforms. It threads into the drain port to seal the passage and prevent oil leakage from the pan.Interchanges:3040813360-3675360-3679389-37086635-05HP6SMack 6635-6HP5ONSCaterpillar 1833407Cummins 3037536This unit is sold in packs of 5.FeaturesPipe plug / oil pan drain plugSold as a pack of 5Unit of measure: Each (sold in 5-piece pack)Tech SpecsType: Pipe Plug / Oil Pan Drain PlugSell Pack: 5 Piece