DEF Filler Neck Introducing the DEF Filler Neck, engineered specifically for Ford, GM/Chevy, and Dodge/Ram vehicles—ensuring seamless compatibility for all your upfitting needs. Designed to simplify the process of outfitting a chassis with a truck body, this essential component enhances both efficiency and ease. Crafted from durable stainless steel, it delivers exceptional resistance to corrosion from diesel exhaust fluid, ensuring longevity even in the most demanding environments. Tailored for the work truck industry, it's a must-have for fleets, service trucks, agriculture, construction, long-haul professionals, and more. • Universal fit• Made from stainless steel to resist DEF fluid corrosion• Compatible with Ford thread DEF cap (070GC35003)• Total length: 6.25”• Flange Diameter: 3.25”• Length Behind Flange: 5”• Bolt pattern allows for Ford Bezel or TFI Stainless Bezel (070BE33411). Any other bezel may need additional mounting holes.