4903482
O Ring Seal
Cummins®

The Cummins 4903482 O Ring Seal is a critical component designed to maintain the integrity of seals within commercial truck systems. It plays a significant role in ensuring the operational efficiency and reliability of various truck systems by preventing leaks and ensuring proper system function.

Basic Concepts of O Ring Seals

An O Ring Seal is a toroidal (doughnut-shaped) elastomer ring used to create a seal between two or more parts. It operates by deforming slightly when compressed between two surfaces, thereby creating a barrier that prevents the passage of fluids or gases. O Ring Seals are widely utilized in mechanical systems for their simplicity, effectiveness, and versatility in sealing applications ¹.

Purpose of the Cummins 4903482 O Ring Seal

The Cummins 4903482 O Ring Seal is specifically engineered to serve in the demanding environments of commercial trucks. It plays a role in sealing applications within the truck’s systems, ensuring that fluids and gases remain contained within their designated pathways. This seal supports various systems, including but not limited to, the fuel system, hydraulic systems, and engine components, contributing to the overall efficiency and reliability of the truck ².

Key Features

The Cummins 4903482 O Ring Seal is characterized by its durable material composition, typically made from high-quality elastomers that offer resistance to a wide range of temperatures and chemical exposures. Its design is tailored to fit specific applications, ensuring a snug fit and effective seal. Unique attributes such as its flexibility and resilience enhance its performance, allowing it to withstand the rigors of commercial truck operations ³.

Benefits

Utilizing the Cummins 4903482 O Ring Seal offers several advantages. It contributes to improved system efficiency by ensuring that seals remain intact, preventing leaks that could lead to system inefficiencies or failures. Its longevity and reliability in sealing applications make it a cost-effective component, reducing the need for frequent replacements and maintenance. Furthermore, its robust design helps in maintaining the integrity of the systems it serves, enhancing the overall performance and safety of the truck.

Installation Considerations

When installing the Cummins 4903482 O Ring Seal, it is important to follow guidelines and best practices to ensure its effectiveness. Preparation steps include cleaning the mating surfaces to remove any debris or old sealant that could compromise the seal. The use of appropriate tools, such as lubricants to facilitate installation without damaging the O Ring, is recommended. Common pitfalls to avoid include over-tightening, which can damage the O Ring, and improper seating, which can lead to ineffective sealing.

Troubleshooting Common Issues

Common problems associated with O Ring Seals, such as leaks or failures, can often be traced back to installation errors, material degradation, or environmental factors. Troubleshooting steps include inspecting the O Ring for signs of wear or damage, ensuring that mating surfaces are clean and properly aligned, and verifying that the O Ring is the correct size and material for the application. Addressing these issues promptly can help maintain the integrity of the seal and the efficiency of the system.

Maintenance Tips

Regular maintenance of the Cummins 4903482 O Ring Seal is key to its longevity and performance. Inspection routines should be established to check for signs of wear, deformation, or damage. Cleaning procedures, particularly before reinstallation, are crucial to remove contaminants that could affect the seal’s performance. Considering replacement at scheduled intervals or when signs of degradation are evident can prevent system failures and ensure continued reliability.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, emissions solutions, and related technologies. With a rich history of innovation and a strong reputation in the commercial truck industry, Cummins is committed to delivering reliable, efficient, and sustainable power solutions that meet the evolving needs of its customers.

Cummins O Ring Seal 4903482 Compatibility

The Cummins O Ring Seal part number 4903482 is designed to fit a variety of Cummins engine models. This O Ring Seal is a critical component in ensuring the integrity of the engine’s sealing system, preventing leaks and maintaining performance.

Compatible Engines

• 15N CM2380 M104B
• 6C8.3
• B4.5 CM2350 B129B
• B5.6 CM2670 B152B
• B5.9 CM2670 B166C
• B6.7 CM2350 B135B
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C
• D4.0 CM2620 D103B
• F2.8 CM2620 F135B
• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F4.5 CM2620 F139B
• F4.5 CM2620 F141C
• ISB (Chrysler)
• ISB CM2150
• ISB CM850
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB3.9 CM2220 B107
• ISB4.5 CM2350 B104
• ISB5.9 CM2880 B110
• ISB5.9 CM2880 B127
• ISB5.9 CM2880 B140

Grouping of Compatible Engines

• B Series Engines:

  • B4.5 CM2350 B129B
  • B5.6 CM2670 B152B
  • B5.9 CM2670 B166C
  • B6.7 CM2350 B135B
  • B6.7 CM2670 B153B
  • B6.7 CM2670 B164C

• F Series Engines:

  • F2.8 CM2620 F135B
  • F3.8 CM2350 F120B
  • F3.8 CM2350 F128C
  • F3.8 CM2620 F137B
  • F4.5 CM2620 F139B
  • F4.5 CM2620 F141C

• ISB Series Engines:

  • ISB (Chrysler)
  • ISB CM2150
  • ISB CM850
  • ISB/ISD4.5 CM2150 B119
  • ISB/ISD6.7 CM2150 SN
  • ISB3.9 CM2220 B107
  • ISB4.5 CM2350 B104
  • ISB5.9 CM2880 B110
  • ISB5.9 CM2880 B127
  • ISB5.9 CM2880 B140

• Other Models:

  • 15N CM2380 M104B
  • 6C8.3
  • D4.0 CM2620 D103B

This O Ring Seal is engineered to provide a reliable seal in various engine configurations, ensuring that the engines operate efficiently and safely.

Role of Part 4903482 O Ring Seal in Engine Systems

The part 4903482 O Ring Seal is integral to ensuring the proper functioning and efficiency of various engine systems. Its application spans across multiple components, providing essential sealing properties that prevent leaks and maintain system integrity.

Air Intake System

In the air intake connection and air intake manifold, the O Ring Seal ensures a tight seal between the components, preventing air leaks that could disrupt the air-fuel mixture and affect engine performance. This seal is particularly important in maintaining the correct air pressure within the intake system, which is vital for optimal combustion.

Exhaust Gas Recirculation (EGR)

For the exhaust gas recirculation system, the O Ring Seal is used in the EGR valve kit and the arrangement of the EGR components. It ensures that recirculated exhaust gases are properly sealed within the system, preventing any unwanted gases from escaping and ensuring that the EGR system functions efficiently to reduce emissions.

Electronic and Engine Control Modules

In the electronic control module wiring harness and the engine control module location, the O Ring Seal is employed to protect sensitive electronic components from moisture and contaminants. This seal is vital for the reliability and longevity of the wiring and modules, ensuring that the engine control systems operate without interference from external elements.

Fuel System

Within the fuel control module and fuel pump kit, the O Ring Seal plays a role in maintaining the integrity of the fuel lines and connections. It prevents fuel leaks, which are not only a performance issue but also a safety concern, ensuring that the fuel system delivers consistent pressure and flow to the engine.

Gasket and Seal Kits

In both the upper engine gasket kit and lower engine gasket kit, the O Ring Seal is a component that ensures all gaskets are properly sealed. This is essential for maintaining compression within the engine cylinders and preventing oil leaks, which can lead to engine damage over time.

Turbocharger and Pressure Sensors

The turbocharger kit and various pressure sensors, including the pressure temperature sensor, rely on the O Ring Seal to maintain the integrity of their connections. This ensures that the turbocharger operates efficiently and that pressure readings are accurate, contributing to overall engine performance and diagnostics.

Long Block and Service Kits

In the long block kit and general service kit, the O Ring Seal is a component that ensures all critical connections are sealed. This is important for the initial setup of the engine and for maintaining its performance during regular service intervals.

The application of the part 4903482 O Ring Seal across these engine systems underscores its importance in maintaining the efficiency, reliability, and safety of the engine.

Conclusion

The Cummins 4903482 O Ring Seal is a vital component in the maintenance and operation of commercial truck systems. Its role in preventing leaks, ensuring system integrity, and contributing to the overall efficiency and reliability of the truck cannot be overstated. Proper installation, regular maintenance, and prompt troubleshooting of common issues are essential practices to maximize the performance and longevity of this Cummins part. As a component of various engine systems, the 4903482 O Ring Seal plays a crucial role in the efficient and safe operation of Cummins engines.