Freightliner 04-35649-002 - Diesel Exhaust Fluid (DEF) Tank Header - UQLS, 6 Gallon, KUS

Features & Benefits

• Six-gallon tank header supports longer refill intervals between service stops
• Integrated UQLS monitors DEF concentration for emissions compliance
• Thermoplastic construction resists DEF crystallization and chemical corrosion
• Factory-spec bolt pattern matches OE tank mounting points
• Compatible with Cummins ISB/ISL and Freightliner M2 chassis configurations
• Maintains clean DEF flow to the pump and injector for system reliability

Freightliner Diesel Exhaust Fluid (DEF) Tank Header

The Freightliner Diesel Exhaust Fluid (DEF) Tank Header supports Selective Catalytic Reduction (SCR) systems by maintaining proper DEF storage and quality monitoring. Designed for installation on Freightliner chassis models that utilize Cummins engine platforms, this header integrates key components, including the DEF quality sensor, into a single unit that installs directly into the DEF tank. This integration makes the OEM Freightliner 04-35649-002 vital for avoiding false warnings, preventing SCR malfunctions, and reducing emissions-related downtime.