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Purpose of using 165-472-0004:
This means air or water is in the system — both can damage the HPU
other times it doesn't—can indicate failing electrical contacts
The truck goes into limp mode or reduces speed (e
Modulates brake pressure during hard braking to keep the wheels spinning
4378048 | Genuine Cummins® Diesel Exhaust Fluid Header Turbocharger kit Purpose of using 165-472-0004:Description: A Diesel Exhaust Fluid (DEF) header 4378048 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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