These filters are for a Detroit Diesel with a DD15 engine. These are for the dual filter one box. They are the 194 part number in the picture below. Four of them are factory filters and need to be cleaned. The last one is a reman filter and is ready to be installed. The reman filter also has a new clamp with it. These were won in a local auction. I’ve done my research on them and they are worth more than I’m selling them for. I’ll take $300 each if you buy them all, but if you want them split up I’ll take $400 each. I am also willing to trade.