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High exhaust back pressure
Freightliner XB Line (2012-2015)
May also indicate the compressor is undersized or struggling to maintain pressure
Purpose of using 2515987C1:
320967 | Genuine Cummins® Def Doser Injector Urea Fuel Injection Pump High exhaust back pressureDescription: A DEF Doser Injector (also called a Urea Injector, DEF Injector, or SCR Doser) 320967 is a component in modern diesel vehicles that sprays DEF (Diesel Exhaust Fluid) into the exhaust system to reduce emissions. Part Number: 320967 Condition: New Manufacture Brand: Cummins Fits 320967 For Cummins Engines EPA13 15 liter ISX QSX Purpose of using 320967 When DEF is sprayed into hot exhaust: DEF converts into ammonia The ammonia reacts in the
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