Description OPW 21GU-0500 DEF Nozzle 3/4 Inch Blue, is Compatible or For Use With Mis-Filling Prevention Device (MFPD Sold Separately) Key Features Mis-filling prevention device eliminates the risk of accidental DEF/AdBlue filling or environmental contaimination Spout with magnetic interface prevents mis-filling mishaps Durable streamlined nozzle design for easy, comfortable nozzle handling and makes it easy to differentiate DEF/AdBlue products Comes with Integral Contaminant-Preventioni Filter; this replaceable, 40-mesh filter provides an added level of protection against DEF/AdBlue contaminants Outfitted in that familiar, and unmistakable "DEF/AdBlue Blue" with slogan badge for instant product identification