4378048 | Genuine Cummins® Diesel Exhaust Fluid Header Turbocharger kit The truck goes into limp

The truck goes into limp mode or reduces speed (e

other times it doesn't—can indicate failing electrical contacts

7L I6 Cummins Turbo Diesel Engine

Controls ABS function

4378048 | Genuine Cummins® Diesel Exhaust Fluid Header Turbocharger kit The truck goes into limpDescription: 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: