Cummins 4988820 Engine Control Module

The Cummins 4988820 is an Engine Control Module (ECM) built on the CM2150 controller platform. It manages fuel injection timing, quantity, and pressure for Cummins ISB 6.7L, QSB 3.3L, QSB 4.5L, QSB 6.7L, ISDE, ISLE, and ISL9 diesel engines. The module processes sensor inputs including crankshaft position, camshaft position, coolant temperature, intake manifold pressure, and fuel pressure to control actuator outputs for injectors, fuel pump, EGR valve, and turbocharger wastegate. It communicates via J1939 CAN protocol for diagnostics and vehicle integration. The ECM requires programming with engine-specific calibration using Cummins INSITE software and the engine serial number (ESN) before installation. Designed for 24V electrical systems in heavy-duty construction equipment applications. Interchange references include Cummins 4988820NX, 4988821, 4943133, 4940518, 4921776, and Komatsu 600-475-1100, 600-475-1101, 600-475-1102, 600-475-1400, 600-475-1800. The module is manufactured by Cummins and Continental (C4988820). Operating temperature range -40°C to +85°C. Sealed aluminum housing with multi-pin connector interface.