4254212C91 | Genuine International® Diesel Exhaust Fluid Header Emission Metering Module 2003 Chevrolet Silverado 3500 6

2003 Chevrolet Silverado 3500 6

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ATR-6 Traction Relay Valve For Kenworth T880

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4254212C91 | Genuine International® Diesel Exhaust Fluid Header Emission Metering Module 2003 Chevrolet Silverado 3500 6Description: A Diesel Exhaust Fluid (DEF) header 5G QLS SSI 4254212C91 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