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DEF FILTERS
Tier 4 diesel engines include exhaust aftertreatment systems to reduce emissions of nitrogen oxides. These systems put a few more responsibilities on your shoulders. For one, you need to keep track of the diesel exhaust fluid (DEF) in your tank and refill it. A less common task, but another important one, is to replace your DEF filter. That’s where we come in. Get OEM-quality DEF filters from CNH Industrial.
Wait, What’s A DEF Filter?
A DEF filter helps clean your engine’s diesel exhaust fluid (DEF). Consisting of 67.5% purified water and 32.5% automotive grade urea, DEF plays a key role in your engine’s Selective Catalytic Reduction (SCR) system.
Your SCR system injects DEF into the exhaust stream, where the urea breaks down into ammonia. Then, with the help of catalysts, the ammonia reacts with nitrogen oxides in the exhaust to produce harmless nitrogen and water. Since nitrogen oxides are pollutants (they contribute to smog and acid rain), your SCR makes your engine’s exhaust less harmful to the environment.
That’s a neat trick — but your DEF isn’t always as clean as it should be. Like fuel, it can pick up contaminants during transportation and storage. These contaminants can cause equipment malfunction, damage and failure. Keep your equipment running and protect it from harm with CNH Industrial DEF filters.