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Backpressure forces the engine to work harder
If monitored with a gauge or scan tool
or tapping sounds coming from the visor area
Outdoorsman
No Power or Won’t Turn On
4353391 | Genuine Cummins® Diesel Exhaust Fluid Sensor 15.5/16/23G, QLS 1% SSI Diesel Particulate Filter Backpressure forces the engine toDescription: A Diesel Exhaust Fluid (DEF) sensor 4353391 is a key component in a diesel vehicles emissions control system, specifically within the Selective Catalytic Reduction (SCR) system. The DEF header (also called a DEF tank head or DEF sender assembly) is the unit mounted on or inside the DEF tank. It monitors and manages the Diesel Exhaust Fluid thats injected into the exhaust to reduce harmful nitrogen oxide (NOx) emissions. Part Number:
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