Return/supply, bottom line is that a supply of orings represented by the above part numbers will work on all plastic fuel pipes. There are crush washers that you need for the pipes with the metal banjo fittings. Phil can provide those numbers.

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2009 E320 Bluetec 117,000
1995 E300D 306,000 Sold
1996 Ford Taurus LX 130,000 Sold
1985 300TD Still 225,000 Sold
2016 Ford Fusion 24,900