4163695C91 | Genuine International® Diesel Exhaust Fluid Sensor 15.5/16/23G, QLS 1% SSI Anti-Lock Transmission may:

Transmission may:

Prevents DEF from Freezing

more fuel can be burned

6L V8 - Diesel 2010 Chevrolet Silverado 2500 HD LT

or grinding noise usually means:

4163695C91 | Genuine International® Diesel Exhaust Fluid Sensor 15.5/16/23G, QLS 1% SSI Anti-Lock Transmission may:Description: A Diesel Exhaust Fluid (DEF) sensor 4163695C91 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: