Tuff Jug 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