Component identification SCR system The illustration provides an overview of SCR system components. 5 1 2 4 3 6 14 7 13 12 11 10 9 8 336 907 1. Evaporator 8. Coolant hose, return from tank and pump heating 2. Pressure line for reductant 9. NOx sensor with control unit 1 3. Coolant hose for tank and pump heating 4. Coolant valve 10. Oxidation catalytic converter 1 11. Exhaust gas temperature sensor 5. Reductant return line 12. SCR catalytic converter 6. Reductant tank 13. NOx sensor with control unit 7. Reductant pump and control unit 14. Reductant doser 1. DC09 084/085/086/087/089A only. OPM 100 en-GB 21 © Scania CV AB 2015, Sweden