CM4387304RX Genuine Bosch Denoxtronic DEF Pump 2.2, 12V
CM4387304RX Genuine Bosch Denoxtronic DEF Pump 2.2, 12V is backordered and will ship as soon as it is back in stock.
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CM4387304RX Genuine Bosch Denoxtronic DEF Pump 2.2, 12V
Part Number: CM4387304RX
Condition: New
Manufacture/Brand: Cummins/Bosch
Related Part Numbers: CU4387304RX, CUM2871879NX, CUMA028Y792
Fits For EPA13 6.7 liter ISB/QSB/ISX Engines
Description:
A DEF dosing module (also called a DEF supply module or urea dosing unit) is a critical part of a diesel engine's emissions system, specifically the Selective Catalytic Reduction (SCR) system. Its main job is to pump and control the injection of Diesel Exhaust Fluid (DEF) into the exhaust stream to reduce nitrogen oxide (NOₓ) emissions. Diesel Exhaust Fluid Dosing Module, Denoxtronic DEF Pump 2.2, 12V For Cummins EPA13 6.7 liter ISB/QSB/ISX Engines.
Purpose:
|
Pump DEF fluid from the tank to the exhaust system |
Signs of a Bad A/C Compressor:
Check engine light / SCR fault
“DEF Quality Poor” or “Limited Speed” warnings
DEF level appears OK but system won’t inject
Crystallized DEF around connectors
DEF injector not working (but it’s not clogged)
About the Manufacturer – Bosch:
Bosch is a global engineering and technology company based in Germany, best known for its high-quality automotive components, industrial technology, consumer goods, and building technology. Founded in 1886 by Robert Bosch, the brand is recognized for innovation, precision engineering, and reliability.
In the automotive sector, Bosch is a leading supplier of systems such as fuel injection, braking, electrical drives, sensors, and emissions control. Their components are widely used by major vehicle manufacturers worldwide.
