A028Y791 | Genuine Cummins® Def Doser Injector Urea Coolant 3 Way Valve detents These components help with

detents These components help with “notchy” feel

Controls brake pressure

The vehicle may not perform DPF burn cycles properly

Oil in the Air System

Air leaks or pressure problems from a faulty valve can sometimes affect idle stability

A028Y791 | Genuine Cummins® Def Doser Injector Urea Coolant 3 Way Valve detents These components help withDescription: A DEF Doser Injector (also called a Urea Injector, DEF Injector, or SCR Doser) A028Y791 is a component in modern diesel vehicles that sprays DEF (Diesel Exhaust Fluid) into the exhaust system to reduce emissions. Part Number: A028Y791 Condition: New Manufacture Brand: Cummins Fits A028Y791 For Cummins Engines EPA13 15 liter ISX QSX Purpose of using A028Y791 When DEF is sprayed into hot exhaust: DEF converts into ammonia The ammonia reacts