25K403 up for sale is a new Kalmar speciality hydraulic filter covered under Kalmar number 921689-0009 and also military NSN 4330-01-481-0355 , comes in sealed bag with O ring as shown , also comes with Kalmar box OEM tag on end of the box , there is a miltiary code tag on the side of the box also shown in the photos , nice new filter for your hydraulic  and other fluid filter applications, see our store for more items like this we add new items each week to our store , thank you rwk