Item Specifics

• Brand: Cummins

• MPN (Manufacturer Part Number): 4993120

• Supersession Part Number: 4993121

• Service Model Name: CM2250 / QSB3.3

• Compatible Engine: Cummins QSB 3.3L Tier 3 / Tier 4i Industrial Diesel

• Condition: Used (Tested Good)

Product Description

Genuine OEM Cummins QSB 3.3L Engine Control Module (ECM) – Part #4993120

Up for sale is a clean, original equipment genuine Cummins industrial ECM removed from a working QSB 3.3 engine application. This heavy-duty Quantum System electronic module features the standard three-plug terminal interface with blue, green, and gray connector bays.

Tested & Verified Performance:

• Full diagnostic bench test completed successfully.

• Confirmed clear network communication and power-up.

• Terminal pins are 100% straight, clean, and free of corrosion.

• Factory exterior casing completely intact.

  
  

Condition Notes:

This is a used field-takeoff electronic module. The rugged cast-metal housing exhibits typical cosmetic weathering, minor oxidation, and surface scratches from normal operation, which do not alter performance. All mounting points and electrical connection locks are fully intact.

Note to Buyer: QSB industrial electronics typically require model-specific calibration or flash programming matching your specific machine configuration and Engine Serial Number (ESN) prior to use.