4956529
Wiring Harness
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$1,499.95 $1,784.94

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.


DESCRIPTION

Wiring harnesses are integral components in commercial trucks, responsible for managing electrical connections and ensuring the reliable operation of various truck systems. These harnesses consist of a network of wires, connectors, and protective materials that facilitate the transmission of electrical signals and power between different parts of the vehicle. They play a role in maintaining the functionality of critical systems such as the engine, transmission, lighting, and electronic control units 1.

Purpose of the 4956529 Wiring Harness

The 4956529 Wiring Harness by Cummins is designed to facilitate the connection between different electrical components and systems within a truck. It ensures that electrical signals and power are efficiently distributed, supporting the operation of various truck functions. This harness is engineered to integrate seamlessly with the truck’s electrical architecture, enhancing the overall performance and reliability of the vehicle 2.

Key Features of the 4956529 Wiring Harness

The 4956529 Wiring Harness is constructed with high-quality materials and features that enhance its performance and durability. It incorporates robust wires encased in protective coatings to withstand the harsh conditions often encountered in commercial trucking environments. The harness is designed with precision to ensure secure connections and efficient signal transmission. Additionally, it may include unique design elements such as strain reliefs and moisture barriers to further protect against physical stress and environmental factors 3.

Benefits of Using the 4956529 Wiring Harness

Incorporating the 4956529 Wiring Harness into truck electrical systems offers several advantages. It contributes to improved reliability by ensuring stable and consistent electrical connections. The harness is designed to reduce maintenance requirements through its durable construction and protective features. Furthermore, it enhances safety by minimizing the risk of electrical faults and ensuring that critical systems operate correctly 4.

Installation and Integration

Proper installation of the 4956529 Wiring Harness is vital for its effective performance. It is important to follow manufacturer recommendations during installation to ensure correct integration with the truck’s existing electrical systems. Careful attention to detail during installation helps prevent issues such as loose connections or damage to the harness, which could affect the truck’s electrical performance.

Troubleshooting Common Issues

Wiring harnesses, including the 4956529, may encounter issues over time. Common problems can include faulty connections, damaged wires, or electrical shorts. Troubleshooting these issues involves identifying the source of the problem, which may require inspecting the harness for visible damage, testing electrical connections, and using diagnostic tools to pinpoint issues within the electrical system. Repairs or replacements should be performed according to manufacturer guidelines to ensure safety and reliability.

Maintenance Tips for Wiring Harnesses

Regular maintenance practices are key to ensuring the longevity and optimal performance of the 4956529 Wiring Harness. This includes routine inspections for signs of wear or damage, cleaning the harness to remove dirt and debris that could affect electrical connections, and applying preventive measures against corrosion or physical damage. Adhering to these maintenance tips helps maintain the integrity of the electrical system and contributes to the overall efficiency of the truck.

Cummins: A Brief Overview

Cummins Inc. is a leading manufacturer in the commercial truck industry, known for its history of innovation and commitment to quality. The company offers a wide range of products, including engines, powertrains, and components, designed to meet the demanding requirements of commercial trucking. Cummins’ reputation for reliability and performance is built on its dedication to engineering excellence and continuous improvement in manufacturing processes.

Cummins Wiring Harness 4956529 Compatibility with QSK38 and QSK50 Engines

The Cummins Wiring Harness 4956529 is a critical component designed to ensure seamless electrical connectivity within various Cummins engine models. This wiring harness is engineered to fit specific engine configurations, ensuring reliable and efficient power distribution.

QSK38 Engines

The QSK38 series, including models such as the QSK38 CM2150 MCRS and QSK38 CM850 MCRS, benefit from the precise electrical management provided by the 4956529 wiring harness. This harness is tailored to integrate with the QSK38’s electrical architecture, facilitating optimal performance and reliability. The harness ensures that all necessary electrical connections are made correctly, supporting the engine’s various systems and components.

QSK50 Engines

Similarly, the QSK50 series, which includes the QSK50 CM2150 K107 and QSK50 CM2150 MCRS, are designed to work with the 4956529 wiring harness. This harness is crucial for maintaining the electrical integrity of the QSK50 engines, ensuring that all electrical systems function as intended. The harness is engineered to handle the specific electrical demands of the QSK50 models, providing a robust and dependable connection solution.

Grouping of Models

The QSK38 CM2150 MCRS and QSK50 CM2150 MCRS share a commonality in their use of the MCRS designation, which likely indicates a specific configuration or feature set. The 4956529 wiring harness is compatible with both these models, ensuring that the electrical systems are properly integrated and functioning. This compatibility highlights the versatility and design consistency of the harness across different engine models within the QSK series.

The QSK38 CM850 MCRS and QSK50 CM2150 K107, while distinct in their specific model numbers, also rely on the 4956529 wiring harness for their electrical needs. The harness’s design accommodates the unique requirements of these engines, ensuring that all electrical connections are secure and reliable.

Role of Part 4956529 Wiring Harness in Engine Systems

The 4956529 Wiring Harness is an integral component in the orchestration of various engine systems, facilitating seamless communication and power distribution among key elements.

Integration with the Harness

The primary function of the 4956529 Wiring Harness is to serve as the central nervous system for the engine’s electrical components. It connects multiple subsystems, ensuring that electrical signals and power are efficiently transmitted. This harness is meticulously designed to interface with the main harness, which routes power from the battery to various engine components. It ensures that all electrical connections are secure, reducing the risk of intermittent connections that could lead to engine malfunctions.

Connection to the Electronic Control Module (ECM) Wiring

A significant aspect of the 4956529 Wiring Harness’s role is its interaction with the Electronic Control Module (ECM) wiring. The ECM is the brain of the engine, responsible for monitoring and controlling various engine functions. The wiring harness provides the necessary connections for the ECM to communicate with sensors, actuators, and other control units. This includes data lines for sensor inputs such as temperature, pressure, and position sensors, as well as control lines for actuators like fuel injectors and ignition coils.

The harness ensures that the ECM receives accurate data in real-time, allowing it to make precise adjustments to engine parameters. This results in optimized performance, improved fuel efficiency, and reduced emissions. Additionally, the harness facilitates the ECM’s ability to diagnose and report faults, aiding in maintenance and troubleshooting efforts.

Conclusion

The 4956529 Wiring Harness by Cummins plays a crucial role in the electrical systems of commercial trucks, particularly in the QSK38 and QSK50 engine series. Its high-quality construction, durable materials, and precise design ensure reliable and efficient electrical connections, contributing to the overall performance and safety of the vehicle. Proper installation, regular maintenance, and timely troubleshooting are essential to maximize the benefits of this Cummins part.


  1. Dixon, John C. Tyres Suspension and Handling Second Edition. SAE International, 1996.

  2. Bonnick, Allan, and Derek Newbold. A Practical Approach to Motor Vehicle Engineering and Maintenance, Third Edition. Elsevier Ltd, 2011.

  3. Singh, D. K. Dictionary of Mechanical Engineering. Springer Nature, 2024.

  4. Mollenhauer, Klaus, and Helmut Tschoeke. Handbook of Diesel Engines. Springer, 2010.

SPECIFICATIONS

Notes
Q38 Oil Pressure Harness
Package Dimensions
21.5 x 18.5 x 7.0 in
Weight
0.255 lb
* 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.