3937123
Double End Plain Stud
Cummins®

The Cummins Double End Plain Stud (Part #3937123) is a critical component used in commercial truck applications, particularly within heavy-duty truck engines. This part ensures that various components are securely fastened and aligned, contributing to the engine’s stability and performance.

Basic Concepts and Functionality

A Double End Plain Stud is a fastener with threads on both ends, designed to screw into two separate components to hold them together. In engine applications, it provides a strong, durable connection between parts subject to high stress and vibration. The stud’s design incorporates precise threading and material selection to withstand demanding engine conditions ¹.

Role in Truck Operation

This Cummins part plays a crucial role in truck operation by securing critical components and maintaining structural integrity within the engine. It is often used to connect parts that require a robust fastening solution, such as cylinder heads to engine blocks or other high-stress areas. By ensuring these connections remain intact, the stud contributes to the overall stability and performance of the engine ².

Key Features

The 3937123 Double End Plain Stud is distinguished by several key features that enhance its performance and durability. These include:

• Material Composition: Typically a high-strength alloy that resists corrosion and wear.
• Precise Threading: Ensures a secure fit.
• Design Specifications: Tailored to the specific requirements of heavy-duty truck engines.

These features collectively contribute to the stud’s ability to perform under extreme conditions ³.

Benefits

The advantages provided by the 3937123 Double End Plain Stud include:

• Enhanced Engine Performance: Provides a strong and stable connection.
• Increased Reliability: Helps prevent component failure.
• Prolonged Longevity: Contributes to the overall lifespan of the engine.

Its durable construction offers value to truck operators and maintenance professionals.

Troubleshooting and Maintenance

Common issues associated with Double End Plain Studs may include loosening over time due to vibration or thermal expansion, corrosion, or damage from improper installation. Troubleshooting these problems involves inspecting the stud for signs of wear or damage, ensuring it is properly torqued, and addressing any corrosion with appropriate treatments. Regular maintenance practices, such as checking torque levels and inspecting for signs of wear, can help ensure optimal performance and longevity of the stud.

Compatibility with Various Engines

The 3937123 Double End Plain Stud is compatible with a range of Cummins engines, including:

6C Series Engines

• 6C8.3
• 6C8.3 G
• 6C8.3 CM558

B Series Engines

• B5.6 CM2670 B152B
• B5.9
• B5.9 CM2670 B153B
• B5.9 CM2670 B166C
• B5.9 G
• B5.9 GAS PLUS CM556

G Series Engines

• G5.9
• G8.3
• G8.3 CM558
• G8.3 GAS PLUS CM556

ISB Series Engines

• ISB CM550
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB4.5 CM2350 B104
• ISB5.9 CM2880 B110
• ISB5.9 CM2880 B140
• ISB5.9 CM2880 B149

ISBE Series Engines

• ISBE CM2150
• ISBE CM800
• ISBE4 CM850

ISC Series Engines

• ISC CM2150

GTA Series Engines

• GTA8.3 CM558

This part ensures the proper alignment and secure fastening of components within these engines, contributing to their overall performance and longevity.

Role in Engine Systems

The 3937123 Double End Plain Stud is integral to the secure and efficient operation of various engine components. It facilitates the attachment and arrangement of multiple parts, ensuring they function cohesively within the engine system.

Turbocharger and Turbocharger Kit

The stud secures the turbocharger to the engine block or exhaust manifold, ensuring a stable connection for enhanced engine performance.

Fuel Pump and Fuel Pump Mounting

It attaches the fuel pump securely to the engine, maintaining the integrity of the fuel delivery system.

Starting Motor and Starting Motor Mounting

The stud is used to attach the starter motor to the engine, ensuring reliable operation of the starting system.

Bosch Fuel Pump Kit and Fuel Pump Brace Kit

It reinforces the fuel pump’s attachment to the engine, withstanding vibrations and stresses during operation.

Gear Housing and Front Gear Cover

The stud secures these components to the engine, ensuring smooth operation and protection from contaminants.

Coupling and Fuel Pump Coupling

It connects different parts of the fuel system, ensuring efficient fuel delivery.

Cover and Cover Assembly Plate

The stud secures these components to the engine, protecting internal parts from debris.

Front Gear and Rear Gear

It attaches these gears to their respective housings, ensuring proper meshing and operation.

Fuel Control Module

The stud attaches the module to the engine, ensuring accurate control of fuel injection.

Marine Applications

In marine applications, the stud secures various components to withstand the harsh marine environment.

Short Block and Product Installation Package

It secures various components during engine assembly, facilitating a smooth and efficient installation process.

Conclusion

The Cummins Double End Plain Stud (Part #3937123) is a versatile and critical component that ensures the secure fastening and alignment of various engine components. Its compatibility with a wide range of Cummins engines, coupled with its robust design and durable construction, makes it an essential part for maintaining the structural integrity and performance of heavy-duty truck engines.

References