3073974
Electrical Connector
Cummins®

Name: 3073974 Cummins | Electrical Connector
Brand: Cummins
SKU: 3073974
Price: 189.95 USD
Availability: InStock
Rating: 5 (1 reviews)

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Genuine OEM Part

This truck part is made by Cummins®. We guarantee that all of our parts are from the OEM (original equipment manufacturer), ensuring a proper fit and quality manufacturing.

Manufacturer Warranty*

We honor the warranty provided by the original equipment manufacturer.

DESCRIPTION

A wiring harness is a collection of wires, connectors, and components that transmit electrical power and signals throughout a vehicle. Its general purpose is to organize and protect the electrical connections that are vital for the operation of various vehicle systems. In heavy-duty trucks, wiring harnesses are particularly important due to the complexity and robustness required to handle the demanding conditions these vehicles often encounter. A typical wiring harness includes wires of various gauges, connectors, terminals, and protective sheathing to ensure durability and reliability ¹.

Purpose of the Cummins 3073974 Wiring Harness

The Cummins 3073974 Wiring Harness is designed to facilitate electrical connections within a truck, supporting various systems such as the engine, transmission, and auxiliary components. It plays a role in ensuring that electrical signals and power are efficiently distributed throughout the vehicle. By providing a structured and protected pathway for wires, this harness helps maintain the integrity of electrical connections, which is crucial for the reliable operation of the truck’s systems ¹.

Key Features

The Cummins 3073974 Wiring Harness is constructed using high-quality materials to ensure durability and performance. It features robust connectors and terminals that are designed to withstand the vibrations and environmental conditions typical of heavy-duty truck operations. The harness is also engineered with protective sheathing to guard against physical damage and exposure to elements. Additionally, its design includes features that enhance ease of installation and maintenance, such as color-coded wires and pre-assembled connectors ¹.

Benefits

The Cummins 3073974 Wiring Harness offers several benefits that contribute to the overall reliability and safety of a truck. By providing secure and organized electrical connections, it helps reduce the risk of electrical faults and improves the efficiency of the truck’s systems. The harness’s durable construction minimizes the need for frequent maintenance, allowing for more consistent and reliable performance. Enhanced safety is another advantage, as secure connections reduce the likelihood of electrical issues that could lead to malfunctions or hazards ¹.

Installation Considerations

Proper installation of the Cummins 3073974 Wiring Harness is vital to ensure its effectiveness and longevity. Best practices include following the manufacturer’s guidelines for routing and securing the harness to avoid stress on the wires and connectors. It is also important to ensure that all connections are tight and properly seated to prevent electrical issues. Common pitfalls to avoid include over-tightening connectors, which can damage terminals, and neglecting to protect the harness from sharp edges or moving parts that could cause abrasion ¹.

Troubleshooting Common Issues

Identifying and resolving common problems with wiring harnesses involves a systematic approach. Electrical faults can often be traced to loose or corroded connections, which should be inspected and cleaned or tightened as necessary. Connection issues may require re-seating or replacing connectors to ensure a secure fit. Physical damage to the harness, such as cuts or abrasions, should be repaired or replaced to maintain the integrity of the electrical system ¹.

Maintenance Tips

Regular maintenance of the Cummins 3073974 Wiring Harness is important to ensure its longevity and optimal performance. This includes periodic inspections for signs of wear, corrosion, or damage. Cleaning connectors and terminals to remove any buildup that could impede electrical conductivity is also recommended. Additionally, ensuring that the harness is properly secured and protected from environmental factors will help prevent issues and extend its service life ¹.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established itself as a trusted name in the automotive and heavy-duty truck industries. The company is committed to quality and innovation, consistently delivering reliable and high-performance components that meet the demanding needs of its customers ².

Cummins Wiring Harness Part 3073974 Compatibility with Engine Models

The Cummins Wiring Harness part number 3073974 is a critical component designed to ensure seamless electrical connectivity within various engine models. This wiring harness is engineered to interface with a range of Cummins engines, providing a reliable and efficient means of managing electrical signals and power distribution. Below is a detailed description of its compatibility with specific engine models:

ISBE and ISG Series

ISBE CM800: The 3073974 wiring harness is compatible with the ISBE CM800 engine, ensuring that all electrical components are properly connected and functioning.
ISG11 CM2880 G108: This harness fits the ISG11 CM2880 G108 engine, providing essential electrical connections for optimal performance.
ISG12 CM2880 G107: The 3073974 wiring harness is also suitable for the ISG12 CM2880 G107 engine, facilitating the necessary electrical pathways.
ISG12 G CMOH6.0 G111: This harness is designed to work with the ISG12 G CMOH6.0 G111 engine, ensuring all electrical systems are interconnected.
ISX12 CM2350 X102: The 3073974 wiring harness is compatible with the ISX12 CM2350 X102 engine, providing a robust electrical connection.
ISX12 G CM2180 EJ: This harness fits the ISX12 G CM2180 EJ engine, ensuring all electrical components are properly linked.
ISX12/ISX11.9 CM2250: The 3073974 wiring harness is suitable for both the ISX12 and ISX11.9 CM2250 engines, providing a reliable electrical connection for both models.

ISL and ISM Series

ISL CM554: The 3073974 wiring harness is compatible with the ISL CM554 engine, ensuring all electrical systems are interconnected.
ISL9 CM2150 SN: This harness fits the ISL9 CM2150 SN engine, providing essential electrical connections.
ISM CM570: The 3073974 wiring harness is suitable for the ISM CM570 engine, facilitating the necessary electrical pathways.

QSM, QSX, and QSZ Series

QSM11 CM570: The 3073974 wiring harness is compatible with the QSM11 CM570 engine, ensuring all electrical components are properly linked.
QSX11.9 CM2250 ECF: This harness fits the QSX11.9 CM2250 ECF engine, providing a robust electrical connection.
QSZ13 CM2150 Z101: The 3073974 wiring harness is suitable for the QSZ13 CM2150 Z101 engine, facilitating the necessary electrical pathways.
QSZ13 CM2150 Z102: This harness fits the QSZ13 CM2150 Z102 engine, ensuring all electrical systems are interconnected.

X12 and Z14 Series

X12 CM2350 X119B: The 3073974 wiring harness is compatible with the X12 CM2350 X119B engine, providing essential electrical connections.
X12 CM2670 X121B: This harness fits the X12 CM2670 X121B engine, ensuring all electrical components are properly linked.
X12N CMMDG1 X143B: The 3073974 wiring harness is suitable for the X12N CMMDG1 X143B engine, facilitating the necessary electrical pathways.
Z14 CM2670 Z103B: This harness fits the Z14 CM2670 Z103B engine, ensuring all electrical systems are interconnected.

M11 Series

M11 CELECT PLUS: The 3073974 wiring harness is compatible with the M11 CELECT PLUS engine, providing a robust electrical connection.

QSG12/X12 Series

QSG12/X12 CM2350 G110: The 3073974 wiring harness is suitable for the QSG12/X12 CM2350 G110 engine, facilitating the necessary electrical pathways.

This wiring harness is meticulously designed to ensure compatibility and reliability across a broad spectrum of Cummins engines, providing a seamless and efficient means of managing electrical connections ².

Role of Part 3073974 Wiring Harness in Engine Systems

The Part 3073974 Wiring Harness is an integral component in the electrical system of engine setups, facilitating the connection between various electrical components and the engine’s control unit. This harness ensures that electrical signals and power are efficiently transmitted to and from the engine, supporting its operation and the functionality of associated systems.

In the context of the brake system, the wiring harness connects the brake components to the engine’s electronic control unit (ECU). This connection allows for the precise modulation of brake force in response to driver input and vehicle conditions, enhancing both safety and performance.

For the engine itself, the wiring harness plays a key role in linking the engine’s sensors and actuators to the ECU. This includes components such as the throttle position sensor, oxygen sensors, and fuel injectors. The harness ensures that the ECU receives accurate data from these sensors and can send appropriate signals to the actuators, optimizing engine performance and efficiency.

The lever and rocker systems, including the rocker lever, rocker lever cover spacer, and rocker lever housing, also rely on the wiring harness for their operation. These components are often part of the valve train mechanism, controlling the opening and closing of the engine’s valves. The wiring harness provides the necessary electrical connections for any electronic components within this system, such as position sensors or electronic actuators, ensuring precise valve timing and operation.

Overall, the Part 3073974 Wiring Harness is essential for the seamless integration and operation of electrical components within engine systems, supporting both the engine’s performance and the functionality of connected systems like the brake and rocker lever mechanisms ¹.

Conclusion

The Cummins 3073974 Wiring Harness is a critical component in the electrical system of heavy-duty trucks, ensuring reliable and efficient distribution of electrical signals and power. Its robust construction, compatibility with various Cummins engine models, and key role in engine systems make it an essential part for maintaining the performance and safety of these vehicles. Proper installation, regular maintenance, and troubleshooting common issues are vital to maximizing the harness’s effectiveness and longevity ¹².

Ribbens, W. B. (2003). Understanding Automotive Electronics. Elsevier Science.
↩ ↩ ↩ ↩ ↩ ↩ ↩ ↩ ↩
Caines, A. J., Haycock, R. F., & Hillier, J. E. (2004). Automotive Lubricants Reference Book. SAE International.
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SPECIFICATIONS

Notes

Cummins P/N 3073972, Jacobs

Hazardous Material

Non-Hazardous (NOI, ICE/Auto)

Package Dimensions

1.9 x 1.0 x 1.0 in

Weight

0.05 lb

RECOMMENDED PARTS

* This information is provided as is and may be out of date. Please contact us or the manufacturer to verify warranty coverage.
* Variable geometry turbocharger and electronic actuator repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after October 1, 2018.
* Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), Selective Catalyst Reduction (SCR) catalyst, and Electronic Control Module (ECM) repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after January 1, 2020.
* These restrictions are only applicable to New parts and ReCon parts coverages for the components listed above sold to a customer in the US or Canada. All other coverages are excluded. All other regions are excluded.

3073974 Electrical Connector Cummins®