• Mercury Outboard Marine Mercruiser ECM0401 ECM0501 ECM555 ECM 555 Motorola ECU ECM 8M0059789, 898369T01, 898369TO1 77-8M0080316
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Mercury Outboard Marine Mercruiser ECM0401 ECM0501 ECM555 ECM 555 Motorola Plug & Play ECU ECM

Mercury Outboard Marine Mercruiser ECM0401 ECM0501 ECM555 ECM 555 Motorola Plug & Play ECU ECM

$1,499.00 USD
$1,499.00 USD
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Mercury Outboard Marine Mercruiser ECU 
Plug & Play, no programming or coding required! 

Is your Mercruiser engine experiencing mysterious shutdowns, blown fuses, or throwing fault codes? 

Part Numbers: ECM 0501, 865926, 8M2000443, 891952011, 8M0083213, ECM5550202, PN: 866191-002, 892204, 865926A01, 885640-001, ECM0402, 866191002, ECM0401, 891952-034, ECM53412369, 89772721T, 884521, 8M0057694 8M0057694 78M0065578, 8M0083210 89195233T 898369T22 866124T05
GTIN: 745061750333

Applications:

Mercury 4.7L V6 MPI
Mercury 5.0L V8 MPI
Mercury 5.7L V8 BRAVO
350 MAG MPI (2006 Searay 320DA and similar)
2006-2007 MIE 350 Mag MPI (closed cooling, s/n 0W690000-1A089999)
2008 5.7L MPI MIE (closed cooling, s/n 1A090000-1A091825)

Hardware Versions: WQ022GG1, WQ00KKZ1, WQ01ZAE1, WQ00RELI, WQ01QUP1
Software Versions: M2002283, 866189-002, 8M2002289, 866191-002, 8M2002293

Experiencing any of these issues?

✓ Blown fuses or electrical failures
✓ No communication with diagnostic tools
✓ Unexpected engine shutdowns
✓ Persistent fault codes
✓ Intermittent performance issues
✓ Oil intrusion damage
✓ Water damage corrosion
✓ Injector driver failures

The Motorola ECM (Engine Control Module) is the brain of your Mercruiser marine engine. This sophisticated computerized system continuously monitors and controls critical engine functions including fuel injection timing, air-fuel ratios, and ignition performance.

ECM Compatibility Chart:
Part Numbers, if you do not see your part number, please contact us! 
864270-006, 864270-007, 864270T06, 864270T07    4.3L ALPHA
865000-003    4.3L ALPHA FWC
864375-3    4.3L BRAVO
864271-3, 864271-4, 864271-005    5.0L ALPHA
865002-002    5.0L ALPHA FWC
864376-3, 864376-4, 864376-005    5.0L BRAVO
865003-1, 865003T01-T03    5.0L BRAVO FWC
864272-5, 864298-3, 864298-006, 864272-006    350 Mag MIE/ALPHA
864377-3, 864377-4    350 Mag BRAVO
864299-006    350 Mag TOW SPORT
865155-001    350 Mag BLACK SCORPION
864300-3    MX 6.2L MIE
864273-3, 864273-4    6.2L BRAVO
865364-001    496 MAG BASE

Other part numbers: 8M0059789, 898369T01, 898369TO1
77-8M0080316 

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Remanufactured

We rebuild OEM control modules with upgraded components to prevent common failures. Unlike junkyard parts that may fail within months, our modules are thoroughly tested and backed by a 6-month warranty. If it fails under warranty, reprogramming is free.

How It Works

Ship us your faulty module. We extract your original data (VIN, mileage, key codes, calibrations) and transfer it to a remanufactured unit. Your old module is recycled for parts. You receive a plug-and-play replacement ready to install.

What to Expect

✓ Turnaround: 2-3 business days

✓ Warranty: 6 months

✓ Programming: Not required—plug and drive

✓ Core Required: Yes (your original module)

About ECU Maverick — OEM Remanufactured Plug & Play Control Modules

ECU Maverick supplies OEM-quality remanufactured control modules, pre-programmed and ready to install. Based in Fort Myers, Florida, we serve independent repair shops, dealerships, and vehicle owners nationwide.

Every module we sell is thoroughly tested, remanufactured to OEM specifications, and programmed to your specific vehicle. No dealer visits, no additional coding, no hassle, ust plug in and drive.

Vehicles We Support

We stock and program modules for European luxury and performance brands, including BMW, Mercedes-Benz, Audi, Porsche, Land Rover, Bentley, Ferrari, Lamborghini, Maserati, and Aston Martin. We also carry modules for domestic vehicles, heavy equipment, and marine applications.

Why Automotive Repair Facilities and Owners Buy From Us

Plug-and-Play Ready — Every module ships pre-programmed and coded to your VIN. No dealer required.

Fast Shipping — Most orders ship within 2–3 business days. Same-day rush available.

OEM Quality — Remanufactured to original equipment standards with component-level inspection and testing.

Direct Support — Text or call us to speak with a real person. We help you find the right module the first time.

6-Month Unlimited Mileage Warranty — Drive with confidence. Our warranty covers you regardless of how many miles you put on.

Our Commitment

We exist to keep your vehicle out of the dealership and back on the road—with quality parts, transparent pricing, and expert support from start to finish. Every module we sell meets the same standards we'd expect for our own vehicles.