Bosch 0986259167 exhaust gas temperature (egt) sensor for the 2015-2016 Mercedes-Benz E250 4-cylinder 2.1L and other vehicles measures exhaust heat and sends the reading to the ECU. The ECU uses that data to time regeneration and urea dosing. Sends precise temperature data to the ECU so SCR and DPF systems stay in their working range Monitors exhaust heat levels to help protect turbos, catalytic converters and diesel particulate filters from thermal overload Stainless steel housing, ceramic insulator and glass-to-metal hermetic seals for exhaust streams above 1,600°F Monitors DOC/DPF inlet and outlet temperatures to confirm the regeneration window and complete soot burn-off Tracks SCR inlet temperature so dosing happens in the proper thermal window Connects to the ECU software through CAN-bus for onboard diagnostics Quick facts Part: Bosch 0986259167 exhaust gas temperature (egt) sensor Fits: 2015-2016 Mercedes-Benz E250 4-cylinder 2.1L and other vehicles Position: Catalytic converter rearward, after particulate filter Condition: New A warning light, or a regeneration cycle that is missed or never finishes, can mean this sensor is worn, though the wiring connector or the particulate filter itself may be the source instead. Track down the cause first, then replace the sensor if it is at fault. Fits This sensor is a direct-fit replacement for the 2015-2016 Mercedes-Benz E250 4-cylinder 2.1L and the 2014-2015 Mercedes-Benz GLK250 4-cylinder 2.1L. Specifications Fit and size Position: Catalytic converter rearward, after particulate filter Quantity per vehicle: 1 Connector: 2 pins, female, rectangular Build and materials Housing: stainless steel Insulator: ceramic Seals: glass-to-metal hermetic Condition: New In the box One exhaust gas temperature sensor. This listing is a single sensor, which matches the quantity per vehicle. Installation notes Direct-fit connectors and standardized mounting threads. Interchange: 0009054305 · 0009056804