DEF Adapter

Built specifically for DEF inlets, the DEF Adapter lets your Tuff Jug spout fit securely into the smaller inlet openings found on most DEF tanks. No more forcing a standard spout into a tight fill neck or dealing with spills and backsplash — this adapter creates a snug, leak-free connection so you can top off DEF fluid quickly and cleanly. Use Case: Designed for precise, spill-free DEF fluid transfer into smaller tank openings