Engine Identification R2.8 CM2220 R101B Page E-4 Section E - Engine and System Identification Exhaust System A typical exhaust aftertreatment system information stamping can provide the following: 1 Section name 2 Part number 3 Date code 4 Assembly number ( only located on the outlet section) 5 Serial number. To buy Cummins Parts and Service Manuals, Training Guides, or Tools go to our website at https://store.cummins.com