Remanufactured Engine Control Unit ECU Module. Part 172-9391, 10R-4331, 1729391, 10R4331. Direct replacement controller built for heavy equipment. Aftermarket replacement for Caterpillar models 980G, 988H, D5N, D6N, 773D, 825H. Solves check engine light, erratic injection, failure to start, and CAN communication failure. Tested with 12 months warranty. Requires engine serial number (ESN) for proper programming.

Heavy Equipment Engine Controller (ECU/ECM)

Aftermarket Replacement for Caterpillar Machinery

Technical Specifications

  • Part Name: Electronic Engine Control Unit (ECU / ECM)
  • Condition Status: High-Grade Remanufactured
  • Fitment Type: Direct OEM Replacement
  • Part Number(s): 172-9391 / 10R-4331
  • Alternative Numbers: 1729391 / 10R4331
  • Housing Specs: Sealed Aluminum Enclosure
  • Voltage Rating: 24V DC
  • Warranty Terms: 12 Months Service Warranty

Common Failure Symptoms (Diagnostic Guide)

  • Engine cranks indefinitely without starting up.
  • Intermittent engine power drop under operational stress.
  • Communication timeout error code displayed on dashboard monitor.
  • Diagnostic scanner cannot establish link with engine computer.

Detailed Equipment Compatibility

Aftermarket replacement for Caterpillar applications:

Loaders: 938G, 938G II, 950G, 950G II, 962G, 962G II, 966G, 966G II, 972G, 972G II, 980G, 980G II, 980H, 988G, 988H, 992G, IT38G, IT38G II

Trucks: 69D, 769D, 771D, 773D, 775D, 777D, 785C, 789C, 793C, 776D, 784C

Tractors & Compactors: D5N, D6N, 824G, 824G II, 824H, 834G, 834H, 825G, 825G II, 825H, 826G, 826G II, 826H, 836G, 836H

Excavators & Graders: 5110B, 5130, 5130B, 5230B, 143H, 163H, 163H NA

Paving Equipment: 8-16B, 10-20B, PM-465, RM-350B

Quality Commitment

  • Engineered and tested strictly according to original equipment standards.
  • Protected by a 12-month technical repair/replacement program.
  • Focused on fast customer fulfillment and dependable field operation.
Crucial Buying & Installation Notes:
  • Send ESN (Engine Serial Number), VIN, and ECM pictures immediately after purchase.
  • Module requires flash programming to match engine specs prior to startup.
  • Installation by experienced diesel technicians is strongly suggested.
  • Price does not include buyer country import duty/tax obligations.