Diesel truck owners, listen up - this FASS water separator is absolutely essential protection for your expensive injection system! It removes over 99% of water from diesel fuel - and that's third-party verified, not just marketing talk. The 2 micron absolute rating means it catches incredibly fine particles that could wreck your injectors. The coolest feature? There's no drain because the water actually gets trapped by the filter element itself - no more messy draining procedures! Important note though - you need to use this with the PF-3001 filter, and it goes on the pressure side of your pump while the PF-3001 handles the suction side. The installation is straightforward if you follow the diagram, but definitely pay attention to the placement. I've been running this setup on my modified diesel truck and the difference in fuel system performance is noticeable. It protects against both water contamination and fine debris that can cause thousands in injection system repairs. Whether you have a stock daily driver or a heavily modified work truck, this separator gives you peace of mind knowing your fuel is clean and dry. The construction feels heavy-duty and built to last through tough conditions. Seriously, if you want to protect your investment and avoid costly fuel system repairs, this water separator is some of the best insurance you can buy. The technology is advanced but the benefits are simple - cleaner fuel, better performance, and longer component life. Definitely recommend for any diesel owner who wants to take proper care of their vehicle!