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New and Used Commercial Truck Engine Control Modules (ECM & ECU)

Browse over 10,000 new, used, and remanufactured commercial truck ECMs and ECUs for sale. We carry engine control modules for all major heavy-duty and medium-duty engines, including Cummins ISX, Detroit DD15, Caterpillar C15, and vocational favorites like the International MaxxForce and Ford Powerstroke. Whether you need a replacement PCM for a delivery truck or a programmed ECM for a Class 8 semi, filter by engine make and model to find the exact module you need.
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Showing 1 - 25 of 10,686 Engine Control Module (ECM) Listings

1 - 25 of 10,686 listings
1 - 25 of 10,686 listings
Detroit Series 60 12.7L DDEC III Engine Control Module (ECM) for a 1997 Freightliner FLD120

Detroit Series 60 12.7L DDEC III Engine Control Module (ECM) for a 1997 Freightliner FLD120

Recently Updated
$1,395 USD
GOOD USED DETROIT ECM PART# 23518645 GUARANTEED TO BE REPROGRAMMABLE, Serial#: 06R0344454, Core Charge: 275, Casting#: Na
ConditionUsed
Fits To Make(s)Freightliner
Fits To Model(s)FLD120
Will Fit Year(s)1997
Part Number23518645
Stock Number50525-14
MLS Number13778945
CategoryEngine Control Modules (ECM)
Last Updated5/15/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Caterpillar 3406E Engine Control Module (ECM) for a 1999 Kenworth

Caterpillar 3406E Engine Control Module (ECM) for a 1999 Kenworth

Recently Updated
$795 USD
USED ECM/ CAT 40 PIN 3406E 1LW S/N GUARANTEED TO BE PROGRAMABLE., Serial#: 1LW14808, Core Charge: 250
ConditionUsed
Fits To Make(s)Kenworth
Will Fit Year(s)1999
Part Number115-3055,117-8351,212-9450,10R4085,20R2075
Stock NumberP-60897
MLS Number13774815
CategoryEngine Control Modules (ECM)
Last Updated5/15/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
NUMBERCall Seller
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Holst Truck Parts
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