OEM Detroit Diesel, Freightliner, Mercedes DEF Doser A0001407439 & more

OEM Detroit Diesel, Freightliner, Mercedes, and Western State Diesel Exhaust Fluid Doser / Metering Unit

Part numbers: A0001407439, A0001405639, A0001405139, A0001405539, EA0001407439, EA0001405639, EA0001405139, EA0001405539, RA0001407439, RA0001405639, RA0001405139, RA0001405539.

The DEF doser / injector is where the urea is sprayed into the exhaust stream. This device controls the amount of DEF going into the SCR and is crucial to maintain the correct NOx efficiency. This product is sometimes referred to as a "metering unit" by Freightliner and other OEMs. This unit is commonly found in the GHG17 plus emissions systems including the Onebox. If you are unsure of a cross reference please call us and we will help you locate the correct version.

This product is genuine Detroit, it is not remanufactured and there is no core charge.

This injector also includes the replacement gasket REP GD0206.