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5507279CUM
Can mislead the driver into thinking the engine is okay when it’s not
Fault codes (like P0600
Signs of a Bad Diesel Fuel Injector 21458369:
4378049NX | Genuine Cummins® Diesel Exhaust Fluid Header Roof Marker 5507279CUMDescription: A Diesel Exhaust Fluid (DEF) header 4378049NX 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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