10345880 | Genuine DuraWRX® DEF Multifunction Head 40 micron, 18" Air Sping Valve The pump may struggle or

The pump may struggle or fail to run

QSN14 CM876 N103

If the EGR is stuck open or stuck partially closed

Part Number: 90035640

Compressor Runs Continuously

10345880 | Genuine DuraWRX® DEF Multifunction Head 40 micron, 18" Air Sping Valve The pump may struggle orDescription: A Diesel Exhaust Fluid (DEF) header 10345880 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: