SKU: 83544341130

25100050 Genuine Mack ECM Engine Control Module

Sale price$359.55 Regular price$399.50
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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

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Description

25100050 Genuine Mack ECM Engine Control ModulePart details DESCRIPTION ECM Engine Control Module CONDITION Used BRAND Mack PART NUMBER 25100050 OTHER OEM PART NUMBERS THAT WILL WORK 0281020083, 0 281 020 083, 12MS534M, 12MS520M, 12MS527AM, 12MS527M, 12MS528M, 12MS532M, 20903220, , 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 25100050
OTHER OEM PART NUMBERS THAT WILL WORK 0281020083, 0 281 020 083, 12MS534M,  12MS520M, 12MS527AM, 12MS527M, 12MS528M, 12MS532M, 20903220, , 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:
  1. 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
SKU: 83544341130

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4.8 ★★★★★
Based on 19 reviews
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Product Reviews
D
Verified Purchase
Diane Underwood
Phoenix, US
★★★★★ 5
Fit!
Perfect
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 20, 2026
J
Verified Purchase
james177us
Los Angeles, US
★★★★★ 1
Stay away
Do not buy these, they will melt.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 9, 2025
J
Verified Purchase
julio diaz
Port Orchard, US
★★★★★ 5
Fit very well
Yes
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Reviewed in the United States on December 18, 2025
D
Verified Purchase
Dakota
Boise, US
★★★★★ 4
Fit. With Modification.
I lost one of my housings on the freeway and had a hard time finding the style I had. Different than the standard, but not the Euro ones. Hard to find, at least for me. These were a bit closer to what mine looked like. I had to remove the rubber gasket around the housing to get it to fit (2003 330XI) but it worked like a charm.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2025
E
Verified Purchase
ELozano
Cuba, US
★★★★★ 3
Not a proper fit
Received as promised by the seller. My cons on this item: 1) the socket holes does not make a tight fit with the light bulb sockets I have. Both issues for left and right. I had to double the o-ring on my light sockets to make it tight fit. 2) The rubbers around the casing was not properly glued in. The rubber sticks out by a few centimeters. Pics attached.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 29, 2025

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