Product Details: Ensure your semi is Ready for the Road Ahead™ with clean diesel exhaust fluid, with the Baldwin Diesel Exhaust Fluid Filter. Thanks to its specialized design, this replacement filter is able to remove contaminants from the DEF solution so that the selective catalytical reduction system can perform at optimal levels. Crafted with a rugged and long-lasting design to reduce the frequency of change intervals. FleetPride is your First Click in Heavy Duty®.