Spectra EM1212URH Diesel Exhaust Fluid (DEF) Heater

DEF Heater for Diesel Emission Control

The Spectra EM1212URH diesel exhaust fluid heater helps maintain DEF flow in cold-weather operation and supports accurate fluid level sensing. It is built for diesel emission control systems on select Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD models.

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

Detailed Product Overview

Part number EM1212URH is a Spectra Premium diesel exhaust fluid (DEF) heater designed for emission control systems that rely on stable DEF temperature and level monitoring. When the DEF tank is not properly heated, freezing can affect system operation and trigger warning lights or reduced vehicle speed. This heater is built for 2011-2016 Chevrolet Silverado 2500 HD and Silverado 3500 HD, as well as 2011-2016 GMC Sierra 2500 HD and Sierra 3500 HD diesel applications.

This part cross-references Standard Ignition DFH106 for the same application. EM1212URH is a practical replacement choice when servicing DEF heater faults on Silverado 2500 HD, Silverado 3500 HD, Sierra 2500 HD, and Sierra 3500 HD trucks.

Common Problems This Part Addresses

• DEF freezing in cold temperatures
• Incorrect DEF level readings
• Check engine light related to DEF system faults
• Reduced vehicle speed caused by low DEF or sensor issues
• Emission system performance problems tied to heater failure

Installation Notes

Verify vehicle year, make, model, and emission system configuration before installation. Confirm connector condition, tank sensor operation, and related DEF system codes during diagnosis. For best results, inspect the DEF tank and wiring harness for contamination, corrosion, or damage before replacing the heater.

Quality Assurance

Spectra Premium validates these DEF heaters through in-house Canadian engineering review to meet OE requirements. Part number EM1212URH is engineered for dependable operation in diesel emission control service.