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    Brand new! No core charge
    OEM direct fit
    Roadwarrior Part # WH-CXXX-ECM-03
    Engine Manufacturer

    OEM Part Number

    4373989

    OEM Price: CAD 3,005

    Sale: CAD 1,366

    Save: $1,639

    SHIPPING INFORMATION

    Category

    Related Parts

    Description

    WH-CXXX-ECM-03 For Cummins 4373989

    Introducing the Roadwarrior WH-CXXX-ECM-03, an OEM-equivalent engine wiring harness for Cummins part number 4373989. This harness is crucial for the efficient operation of your engine, ensuring reliable electrical connections to all necessary components for smooth engine performance.

    Recognizing the Need for a New Harness: Over time, wiring harnesses can degrade due to factors like mechanical stress, environmental exposure, and normal wear. Indications of a harness in need of replacement include fluctuating power output, unusual engine behavior, and trouble codes related to electrical systems. The WH-CXXX-ECM-03 is the ideal solution to these problems.

    Why Choose Roadwarrior: Roadwarrior harnesses stand out for their robust construction and precise engineering. The WH-CXXX-ECM-03 is made with premium materials that offer enhanced protection against the rigors of engine operation, ensuring a long service life and performance that meets or surpasses OEM standards.

    Simple Installation and Perfect Compatibility: Tailored specifically for engines that utilize Cummins part number 4373989, this harness is designed for a perfect fit, allowing for a hassle-free installation process. It reinstates the full functionality of your engine’s electrical system with accuracy and efficiency.

    Additional information

    RW Part Number

    WH-CXXX-ECM-03
    Part Type

    5 reviews for 4373989

    1. Dale
      6 June 2024
      We had multiple Kenworth trucks with Cummins engines facing severe corrosion issues and frequent electrical faults. The Roadwarrior WH-CXXX-ECM-02 was...More
      We had multiple Kenworth trucks with Cummins engines facing severe corrosion issues and frequent electrical faults. The Roadwarrior WH-CXXX-ECM-02 was a lifesaver. Replacing the old harness (OEM 4373989) with this one solved all the problems. No more dead batteries or random CELs.
      Helpful? 0 0
      Mike
      6 June 2024
      We had a lot of trouble with Peterbilt trucks due to worn-out wiring harnesses causing intermittent CEL and no-start problems. After installing the Ro...More
      We had a lot of trouble with Peterbilt trucks due to worn-out wiring harnesses causing intermittent CEL and no-start problems. After installing the Roadwarrior wiring harness WH-CXXX-ECM-02, (OEM part# 4373989), all these issues were resolved. The trucks are running without any electrical faults, and the harness has proven to be very reliable.
      Helpful? 0 0
      Sam
      6 June 2024
      As a truck repair mechanic, I frequently deal with persistent electrical issues in Freightliner and International trucks with Cummins engines due to w...More
      As a truck repair mechanic, I frequently deal with persistent electrical issues in Freightliner and International trucks with Cummins engines due to worn-out wiring harnesses, these problems have since been resolved after installing the Roadwarrior wiring harness. The trucks are running smoothly without any electrical glitches.
      Helpful? 0 0
      Rusty
      6 June 2024
      My repair shop has seen many International and Peterbilt trucks with Cummins engines suffering from electrical faults due to aged harnesses. The wirin...More
      My repair shop has seen many International and Peterbilt trucks with Cummins engines suffering from electrical faults due to aged harnesses. The wiring harness from Roadwarrior resoloved a whole lot of issues. The trucks are back on the road, haven't heard any problems so far. Also received the part a lot quicker than I expected.
      Helpful? 0 0
      Nick
      6 June 2024
      I've replaced the old, worn-out harnesses in several International and Kenworth trucks with the Roadwarrior WH-CXXX-ECM-02. This has eliminated the el...More
      I've replaced the old, worn-out harnesses in several International and Kenworth trucks with the Roadwarrior WH-CXXX-ECM-02. This has eliminated the electrical problems. My customers are very satisfied with the improved performance and reliability of their trucks.
      Helpful? 0 0
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    Next Day Is Nice, Same Day is Better!​

    A faulty emissions control system can cost you thousands in wasted man-hours as your heavy equipment sits in the shop awaiting a new part. Whether it’s a truck behind on orders, a bus that can’t take passengers, or heavy machinery delaying construction deadlines, Roadwarrior can get you moving again!

    Roadwarrior has twelve warehouses across the U.S.A. and Canada, which can deliver the most popular aftertreatment parts in 1-2 days. With over 1,000 DPFs, DOCs and SCRs on offer, Roadwarrior offers the largest aftertreatment catalogue.

    *LightningVolt lithium batteries ship directly from Roadwarrior in Ontario, to ALL 50 states, including Alaska and Hawaii within 2-4 days.

    Roadwarrior Has You Covered!

    All Roadwarrior emissions parts carry a full value 12 month warranty.

    LightningVolt lithium batteries carry a full value 30 month warranty.

    To make the process hassle-free, our parts have a metal nameplate with the serial number, so even after 500,000 miles of service, it’s still easy to identify. This avoids the common problem of serial numbers printed on stickers that burn off after the first start-up, making them impossible to return. Our failsafe system allows us to work in your interests, honouring claims for on-road and off-road replacements, and giving you peace of mind.

    And since Roadwarrior parts are designed to meet or exceed OEM specifications, you can rest easy knowing our direct fit parts will take the problems out of your aftertreatment without interfering with your OEM warranty.

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    Better Coating, Better Performance.

    Roadwarrior is the only manufacturer to use Metalcor® catalyst technology across its entire range of Diesel Oxidation Catalysts (DOCs) and Selective Catalytic Reduction catalysts (SCRs). Metalcor® catalysts feature high activity catalyst coatings fused to thinner, stronger, catalyst substrates to guarantee maximum performance under the harshest conditions.

    Metalcor® catalyst coatings are designed and produced in our own labs. We then inspect each unit to ensure you get more fuel efficiency, lower consumption of DEF, and long term performance from your heavy duty engine!

    LEARN MORE

    Better Coating, Better Performance.

    Roadwarrior is the only manufacturer to use Metalcor® catalyst technology across its entire range of Diesel Oxidation Catalysts (DOCs) and Selective Catalytic Reduction catalysts (SCRs). Metalcor® catalysts feature high activity catalyst coatings fused to thinner, stronger, catalyst substrates to guarantee maximum performance under the harshest conditions.

    Metalcor® catalyst coatings are designed and produced in our own labs. We then inspect each unit to ensure you get more fuel efficiency, lower consumption of DEF, and long term performance from your heavy duty engine!

    LEARN MORE
    METLOGO_1CPOS_BLK_HORIZ

    Roadwarrior Has You Covered!

    All Roadwarrior emissions parts carry a full value 12 month warranty.

    LightningVolt lithium batteries carry a full value 30 month warranty.

    To make the process hassle-free, our parts have a metal nameplate with the serial number, so even after 500,000 miles of service, it’s still easy to identify. This avoids the common problem of serial numbers printed on stickers that burn off after the first start-up, making them impossible to return. Our failsafe system allows us to work in your interests, honouring claims for on-road and off-road replacements, and giving you peace of mind.

    And since Roadwarrior parts are designed to meet or exceed OEM specifications, you can rest easy knowing our direct fit parts will take the problems out of your aftertreatment without interfering with your OEM warranty.

    FIND MY PART

    Next Day Is Nice, Same Day is Better!​

    A faulty emissions control system can cost you thousands in wasted man-hours as your heavy equipment sits in the shop awaiting a new part. Whether it’s a truck behind on orders, a bus that can’t take passengers, or heavy machinery delaying construction deadlines, Roadwarrior can get you moving again! 

    Roadwarrior has twelve warehouses across the U.S.A. and Canada, which can deliver the most popular aftertreatment parts in 1-2 days. With over 1,000 DPFs, DOCs and SCRs on offer, Roadwarrior offers the largest aftertreatment catalogue.

    *LightningVolt lithium batteries ship directly from Roadwarrior in Ontario, to ALL 50 states, including Alaska and Hawaii within 2-4 days.

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