Spectra EM2403URH Diesel Exhaust Fluid (DEF) Heater
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Spectra

Spectra EM2403URH Diesel Exhaust Fluid (DEF) Heater

Brand Spectra EM2403URH
Fits Mercedes-Benz · 4 vehicles

OE requirements validated. In-house engineering checks help ensure dependable performance.

Precisely calibrated heater. Helps keep DEF from freezing during normal operation.

Accurate fluid level indicator. Helps prevent a depleted tank and warning lights.

Cross-references Bosch F01C600237, URO 1664710875 and 5D9010L for the same application. See all 4.

$226.53Free shipping
In stock · usually ships same day before 1pm CST
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Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Diesel Exhaust Fluid (DEF) Heater options

Spectra EM2403URH DEF Heater Overview

The Spectra EM2403URH diesel exhaust fluid heater helps maintain DEF flow in cold conditions and provides fluid level sensing for diesel emissions systems. It is a direct-fit emission control component for select Mercedes-Benz GL350 models with Code U42.

  • Precisely calibrated heater and temperature sensor
  • Helps prevent DEF from freezing during normal vehicle operation
  • Provides accurate DEF level indication
  • OE-requirement validation by in-house Canadian engineering team
  • Direct replacement for select Mercedes-Benz diesel applications

Detailed Application Information

Built for emission system service, this Spectra Premium DEF heater supports proper diesel exhaust fluid management by warming the tank contents and monitoring fluid level. For 2013-2016 Mercedes-Benz GL350, N/A, w/ Code U42, the EM2403URH helps address cold-weather DEF freeze concerns and low-fluid warnings that can trigger a check engine light and reduced vehicle speed. This part number, EM2403URH, is also referenced in OE-style replacement searches for Mercedes-Benz GL350 DEF heater service.

This part cross-references Bosch (e.g., F01C600237) for the same application.

What It Helps Address

  • DEF freezing during winter operation
  • Incorrect or unstable DEF level readings
  • Check engine light caused by low DEF conditions
  • Reduced engine speed from depleted DEF warnings
  • Failed DEF heater or temperature sensor operation

Installation Notes and Tips

Verify the vehicle is a 2013-2016 Mercedes-Benz GL350 with Code U42 before ordering. Confirm connector condition, tank sealing surfaces, and emission system fault codes during diagnosis. Follow OE service procedures for DEF system handling and calibration checks after installation.

Quality Assurance

Spectra Premium validates these DEF heaters with in-house Canadian engineering review to meet OE requirements for fit and function.

Related reading

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelNotes
2016Mercedes-BenzGL350w/ Code U42
2015Mercedes-BenzGL350w/ Code U42
2014Mercedes-BenzGL350w/ Code U42
2013Mercedes-BenzGL350w/ Code U42
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — F01C600237URO — 16647108755D9010L1664710475