URO 1664710875 Diesel Exhaust Fluid (DEF) Heater

Mercedes-Benz DEF Heater Replacement

This URO Diesel Exhaust Fluid (DEF) heater is a specific-fit replacement for the factory unit used on the 2013 Mercedes-Benz GL350 with Option Code U42. Built to match OE function and performance, part number 1664710875 supports proper aftertreatment system operation and dependable DEF heating.

• Specific fitment for the 2013 Mercedes-Benz GL350, N/A
• Matches factory DEF heater function and performance
• Manufactured with quality materials for durability and reliability
• Black housing and black hose for OE-style appearance
• Housing and hose fitting material: PPA-GF35
• 2 electrical connectors with 7 terminal positions
• Barbed male hose end design
• Mounting hardware included

Detailed Product Information

URO 1664710875 is a Diesel Exhaust Fluid heater designed for direct replacement use in emission control systems. It is built for the 2013 Mercedes-Benz GL350 and follows the factory configuration for vehicles with Option Code U42, including level sensor integration noted in the fitment data. The unit uses a black housing, black hose, and PPA-GF35 construction to support consistent fit and service life. If you are searching for a Mercedes-Benz GL350 DEF heater replacement or a URO 1664710875 emission component, this part addresses the OE-style heating function required for proper DEF system operation.

This part cross-references 166 471 0475 and F-01C-600-237 for the same application.

What It Helps Address

• DEF heater failure codes related to aftertreatment system operation
• Cold-weather DEF heating issues
• Improper DEF temperature control
• Emission system performance concerns tied to heater malfunction
• Replacement needs for a worn or damaged factory heater assembly

Installation Notes and Tips

Verify the vehicle’s Option Code U42 and confirm the 2013 Mercedes-Benz GL350 application before installation. Inspect electrical connectors, hose routing, and mounting points for damage or contamination before transferring the replacement unit into service. Because this is a specific-fit emission component, matching the original configuration is important for correct operation.

Quality Assurance

URO manufactures this DEF heater using quality materials and factory testing to support durability and reliability. Part number 1664710875 is backed by a 24 Month Unlimited Mileage Warranty.