Cummins AFTERTREATMENT INJECTOR KIT 5578983RX

5578983RX is a Genuine Cummins Remanufactured Diesel Exhaust Fluid (DEF) Aftertreatment Injector Kit. It is primarily used on EPA17 and EPA21 6.7-liter Cummins ISB/QSB engines to spray DEF into the exhaust stream to reduce harmful nitrogen oxide (NOx) emissions.

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