3984746 | Genuine Cat® Diesel Exhaust Fluid Pump 2.2 12V, 5 Outlet Roof Marker If the catalyst isn’t oxidizing

If the catalyst isn’t oxidizing hydrocarbons properly:

Shows ammonia levels when there’s none

Gap between engine and transmission

Part Number: 0-986-44D-203

Signs of a Bad Steering Cylinder Power 8M0208402:

3984746 | Genuine Cat® Diesel Exhaust Fluid Pump 2.2 12V, 5 Outlet Roof Marker If the catalyst isn’t oxidizingDescription: A Diesel Exhaust Fluid Pump 3984746 is a component of a diesel engines Selective Catalytic Reduction (SCR) system, which is used to reduce nitrogen oxide (NOx) emissions from the exhaust. Its sometimes also called a urea dosing module because it handles Diesel Exhaust Fluid (DEF), which is a urea solution. Denoxtronic 2. 2 Doser Fluid Supply Module 12V, 5 Outlet For Volvo D11, D13, Mack MP7, MP8, Cat C9. 3, C13, C15, Hino 268, 268A, 338