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Cummins P3990517 ECM Control Board (3990517) for QSB5.9 Engine/Modern R290-7 Excavator

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Engine Model	Cummins QSB5.9
Control Unit Type	Electronic Control Module (ECM)
Series	CM550

Manufacturer No.

3990517P3990517

Engine Part No.

Cummins QSB5.9ISB QSB5.9

Interchange No.

J91435J91434

Fitment Vehicles

Hyundai R290-7Hyundai R290LC-7Case Series Excavators

Electrical and Electronic System - Industrial Encyclopedia

Cummins OEM/Replacement ECM Control Board P3990517 (also known as 3990517), compatible with Cummins QSB5.9 diesel engine, widely used in modern R290-7 excavators, Case excavators, and other construction machinery. This ECM module is controlled by the Cummins CM550 series, providing precise electronic control for the engine to ensure fuel economy and power output. Interchangeable part numbers include J91435, J91434, etc. Reliable quality, perfect replacement for OEM parts, suitable for 7 series track excavators.