Need a dependable repair for your Cummins ISX ECM 4921776? Send your unit to ECM Engineering USA for professional diagnosis, reconditioning, testing, and return shipment to the same vehicle it came from.

Cummins ISX ECM 4921776 Repair Service

We diagnose the unit first. If it is not repairable or no fault is found, a $200 diagnostic charge plus shipping applies, and we refund the difference from the service price.

Warranty and Experience

This repair service is backed by a one-year warranty and supported by more than 15 years of engineering experience, over 10,000 repaired ECMs, and advanced simulation testing.

Engine Platforms and Applications

This ECM may be used across Cummins diesel, industrial, construction, and marine applications. Confirm compatibility by matching the part number on your unit before shipping.

• Common Cummins ISB, ISC, ISL, and QSB series applications
• Selected heavy equipment applications, including Komatsu and Hyundai platforms
• Cummins QSB 6.7L marine configurations

Common Symptoms

• Blown fuses
• No communication
• Engine shutdowns
• Fault codes
• Intermittent faults
• Oil intrusion or water damage
• Injector driver faults

Repair Process

1. Ship your ECM to ECM Engineering USA.
2. Our engineers diagnose the unit and repair eligible faults.
3. We test the repaired ECM and ship it back for installation.

Contact us before shipping if you want to discuss the symptoms your vehicle is experiencing.