DEF Fluid 2.5 Gallon, 7503521

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Victory Blue DEF is comprised of non-toxic, high-purity synthetic urea and deionized water. Engineered for use in Selective Catalytic Reduction (SCR) systems on diesel engines, this DEF helps convert NOx molecules into harmless nitrogen and water vapor to reduce emissions and improve fuel economy.

This new DEF is API registered and meets OEM specifications as well as the ISO 22241-1 specifications for DEF.

Due to engineering standards, some parts are updated or changed and are assigned a new part number. Previous part number was 7446446. This part is the direct replacement.

Use the Serial Number Parts Finder above or check the Bobcat Online Parts Catalog to ensure the correct part for your equipment. Parts can vary depending on your serial number.


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WARNING: This product can expose you to chemicals including lead and lead compounds, mineral oils, and phthalates which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to