Clear View DEF Diesel Exhaust Fluid Funnel

It's easy to add diesel exhaust fluid without spills using the Performance Tool W4088 DEF Funnel, designed specifically for modern diesel systems. Constructed from transparent blue-tinted polypropylene, this funnel allows you to easily monitor fluid flow and levels while pouring, helping reduce overfills and waste. The specialized double-bend design is engineered to fit standard 19 mm DEF ports and stand upright, giving you added stability and control. A high back opening helps minimize splashes and spills, making fluid transfer cleaner and more efficient in tight engine bays. With a 14.2 ounce (420 mL) capacity, it provides the right size for precise DEF filling without unnecessary bulk. Ideal for diesel technicians, mechanics, truck owners, and diesel enthusiasts, this funnel is a practical solution for maintaining diesel emissions systems with accuracy and ease.