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Description
12MS520M Genuine Mack ECM Engine Control ModulePart details DESCRIPTION ECM Engine Control Module CONDITION Used BRAND Mack PART NUMBER 12MS520M OTHER OEM PART NUMBERS THAT WILL WORK 0281020083, 0 281 020 083, 12MS534M, , 12MS527AM, 12MS527M, 12MS528M, 12MS532M, 20903220, 25100050, 25101480, 25128960, 25132509, 85050547, 85020547 , 12MS527(A)M Function of this part The engine control module (ECM) is the electronic brain of the engine. It reads information from sensors and commands fuel delivery,
Part details
| DESCRIPTION | ECM Engine Control Module |
| CONDITION | Used |
| BRAND | Mack |
| PART NUMBER | 12MS520M |
| OTHER OEM PART NUMBERS THAT WILL WORK | 0281020083, 0 281 020 083, 12MS534M, , 12MS527AM, 12MS527M, 12MS528M, 12MS532M, 20903220, 25100050, 25101480, 25128960, 25132509, 85050547, 85020547 , 12MS527(A)M |
Function of this part
The engine control module (ECM) is the electronic brain of the engine. It reads information from sensors and commands fuel delivery, timing, and other actuators to keep the engine running properly.
Why this part matters
Without a functioning ECM, the engine will not start or will run poorly. A correct, working ECM is essential for performance, diagnostics, emissions control, and protecting the engine from damage.
About the brand
Mack is known for building tough trucks and components for construction, vocational, and highway fleets that need reliable performance day after day.
Fitment & usage
Used OEM parts are a smart choice for controlling repair costs while still using original-equipment components. Always match the OEM part number(s) listed to your existing part, and consult your service manual, dealer, or technician if you are unsure about fitment.
Note: Because this is a used component, normal signs of wear such as scratches, discoloration, or light surface corrosion may be present. Refer to the product photos and information on Second Truck Parts for the best representation of the part you will receive.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy