AFTERTREATMENT QUICK REFERENCE GUIDE DIESEL PARTICULATE FILTER (DPF) DPF DOSER INJECTOR DPF DOSING MODULE EXHAUST GAS RECIRCULATION VALVE/S (EGR VALVE) EGR COOLER DIESEL OXIDATION CATALYST (DOC) DOC DOSER INJECTOR DEF DOSING INJECTOR NOZZLE DEF TANK, DEF DOSING MODULE LAMBDA SENSOR (O2 SENSOR) NOx SENSOR AFTERTREATMENT CONTROL MODULE (AFTERTREATMENT ECM) SELECTIVE CATALYTIC REDUCTION (SCR) No progressive damage from aftertreatment to any other component except within the aftertreatment system. Please read contract for more information. Proof of maintenance on aftertreatment components being done as per OEM schedule must be documented by customer in event of claim. This Quick Reference Guide is intended as a general guideline and is not part of any service contract. See service contract for specific coverage.