URO 1664710775 Diesel Exhaust Fluid (DEF) Heater

Mercedes-Benz DEF Heater Replacement

This URO diesel exhaust fluid heater is a direct replacement for select Mercedes-Benz diesel applications that use an integrated level sensor. It is built for owners and technicians servicing emission control systems on 2012-2015 Mercedes-Benz ML350 and ML250 models.

Key Features

• URO replacement part number 1664710775
• Diesel Exhaust Fluid (DEF) heater for emission control service
• Fits applications with an included level sensor
• Mounting hardware is not included
• Cross-references Standard Ignition EFH211 and Cardone Reman 5D-9007L for the same application

Product Details

URO Parts replacement components are made for European vehicles and are intended to meet or exceed OEM specifications. This DEF heater is used in the SCR/DEF system to help maintain proper fluid temperature in cold conditions, supporting reliable emission system operation on Mercedes-Benz ML350 and Mercedes-Benz ML250 diesel models. The part number 1664710775 is also referenced by other aftermarket listings, making it easier to confirm the correct application during service.

Common Issues This Part May Address

• DEF heater fault codes related to fluid temperature control
• Emission system warnings tied to DEF tank heating performance
• Cold-weather DEF system operation problems
• Level sensor-related service replacement on the DEF tank assembly
• Failed heater element causing SCR system faults

Installation Notes

Verify the vehicle’s DEF tank configuration before ordering, since this part is listed for applications that include a level sensor. Confirm connector style, mounting points, and system diagnosis before replacement. Because mounting hardware is not included, reuse or source any required fasteners separately if needed.

Quality Assurance

URO Parts components are positioned as OEM-spec replacement parts for European vehicles and are commonly used by professional repair shops and DIY technicians. Part number 1664710775 is a direct-reference replacement for select Mercedes-Benz ML350 and ML250 diesel applications.