Buy wp20518 - Genuine Cummins ETR CNT MDL Wiring Harness - wisentpartscenter.com

Description

Genuine Cummins 3681540 Electronic Control Module Wiring Harness connects the ECM to the sensors, actuators, power, and ground circuits used by the engine control system. This harness family is documented on Cummins QSX15 G-Drive CM570 applications, where the later design also carries the ambient/barometric pressure sensor as part of the harness assembly.

Verify fitment with us before ordering to ensure the correct part for your application.

Purpose of the Part

The 3681540 is the electrical link between the ECM and the engine components it monitors and controls. A reliable harness allows the ECM to receive accurate sensor information and send commands back to the fuel, air-management, and other electronically controlled systems without signal loss or intermittent connections.

Issue Symptoms / When to Replace

A damaged engine harness can cause intermittent fault codes, sensor readings that disappear or become unstable, actuator faults, communication problems, or a no-start condition. Problems that change when the harness is moved often point toward broken wiring, loose terminals, or connector damage rather than a failed sensor or ECM.

Brand Information

Cummins has manufactured diesel engines and engine-control components since 1919 and develops application-specific wiring systems for its electronically controlled engines. On the QSX15 CM570, the engine harness connects the ECM with the sensors and controls required by the engine-management system, and Cummins later revised this harness design to incorporate the ambient/barometric pressure sensor directly into the harness.

How to Identify an OEM Part

The OEM harness can be identified by the factory Cummins sticker label showing the Cummins logo and the Cummins part number.

Why Buy 3681540 From Wisent Parts Center?

  • 1 Year
    Warranty

  • Genuine Parts

    Authentic OEM parts

  • 30-Day Returns

    Conditions apply

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Warranty & Return Information
Warranty Information

Wisent Parts offers a 1-year warranty on all parts from the date of delivery. This warranty covers orders placed directly through our website. If a part fails during this period, we’re here to help - whether it’s a replacement, repair, or refund. For full details, refer to the Warranty page.

Return Information

Wisent Parts accepts returns within 30 days of delivery. All returns are subject to a restocking fee. To qualify, parts must be unused and in their original condition. For full return instructions and restocking fee details, please refer to the Returns page.