0 444 042 208 | Bosch® Def Urea Injection PumpDescription: Def Urea Injection Pump Condition: New Brand: Bosch Part Number: 0 444 042 208 Weight: 23 lbs Fit for: Bosch Functions: Def delivery: The pump draws DEF from the DEF tank and delivers it to the SCR system. Def metering: The pump can accurately control the amount of DEF injected based on the engine's operating conditions and NOx emissions levels. Injection timing: The pump's operation is synchronized with the engine's exhaust system to