Replace your Freightliner DEF Filter at least every 150,000 miles to help maintain proper function of your SCR system and improve performance. The Baldwin Filters Urea Diesel Exhaust Fluid (DEF) Filter in a Plastic Shell is quality engineered so this Freightliner truck part can remove particulate and urea crystals that can plug NOx emissions control equipment. Free Shipping. You can also view our collection of Baldwin Filters online.
Removes particulate that can impact SCR System function