At One Click Purchasing, we are your reliable source for the NSN part 21438 manufactured by Cummins Inc. We carry a wide range of popular NSN items on our website, including Filter Fluid like part number 21438 which is listed with the NSN 2940008979139 for easy identification. If you are interested in 21438 item, then take the advantage of our online RFQ service, or peruse our website as you see fit to find other items of interest that you may wish to learn more about.