3937371
Air Cleaner Strap
Cummins®

The Air Cleaner Strap, identified by Part #3937371, is a component manufactured by Cummins, a leader in the automotive and heavy-duty truck industry. This part plays a significant role in the air filtration system of heavy-duty trucks, ensuring the air cleaner assembly remains securely attached to the engine.

Purpose and Function

The Air Cleaner Strap is designed to secure the air cleaner assembly to the truck’s engine. By maintaining a firm connection, it helps preserve the integrity of the air filtration system. This ensures that air entering the engine is properly filtered, which is vital for the engine’s performance and longevity. The strap contributes to efficient airflow by preventing the air cleaner from shifting or becoming dislodged, which could otherwise lead to unfiltered air entering the engine ¹.

Design and Construction

This Cummins part is constructed from materials that offer durability and resistance to various environmental factors. Its design incorporates features that enhance its longevity and effectiveness. The strap is engineered to withstand the rigors of heavy-duty truck operations, including exposure to vibrations, extreme temperatures, and harsh road conditions. It is specifically tailored to be compatible with Cummins engines, ensuring a precise fit and reliable performance ².

Installation Process

Installing the Air Cleaner Strap requires careful attention to detail to ensure proper functionality. Begin by positioning the strap around the air cleaner assembly and the designated mounting points on the engine. Use the appropriate tools to secure the strap, ensuring it is tight enough to hold the air cleaner in place without over-tightening, which could damage the components. Follow the manufacturer’s guidelines for the correct sequence and torque specifications during installation ³.

Maintenance and Inspection

Regular inspection and maintenance of the Air Cleaner Strap are recommended to ensure its continued effectiveness. Check for signs of wear, such as cracks, fraying, or loosening, which may indicate the need for replacement. It is also important to ensure that the strap remains properly secured during routine maintenance checks. Following the manufacturer’s maintenance schedule will help identify when the strap might need to be replaced to maintain optimal engine performance.

Troubleshooting Common Issues

Common issues with the Air Cleaner Strap may include loosening or damage due to wear and tear. If the strap becomes loose, it may no longer secure the air cleaner assembly effectively, potentially allowing unfiltered air into the engine. Inspect the strap regularly for any signs of damage or wear. If issues are detected, consider tightening the strap or replacing it as necessary to maintain the integrity of the air filtration system.

Benefits of Using Genuine Cummins Parts

Using genuine Cummins parts, such as the Air Cleaner Strap, offers several advantages. Original Equipment Manufacturer (OEM) parts are designed specifically for Cummins engines, ensuring compatibility and optimal performance. Genuine parts like the Air Cleaner Strap are crafted to meet Cummins’ high standards for quality and durability. Additionally, using OEM parts may provide warranty coverage, offering peace of mind and protection for your investment.

Cummins Corporation

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a rich history dating back to 1919, Cummins has established a strong reputation in the automotive and heavy-duty truck industry. The company offers a wide range of products designed to meet the needs of various applications, from on-highway to off-highway and industrial uses. Cummins is known for its commitment to innovation, quality, and customer satisfaction, making it a trusted name in the industry.

Cummins Air Cleaner Strap 3937371 Compatibility

The Cummins Air Cleaner Strap part number 3937371 is designed to fit a variety of Cummins engines, ensuring a secure and efficient connection between the air cleaner assembly and the engine. This part is crucial for maintaining the integrity of the engine’s air intake system, which is essential for optimal performance and longevity.

Compatible Engines

• 6B5.9: The Air Cleaner Strap 3937371 is compatible with the 6B5.9 engine, providing a reliable connection that helps maintain the air cleaner’s position and integrity.
• ISB CM550 and ISB CM850: Both the ISB CM550 and ISB CM850 engines are designed to work seamlessly with the 3937371 Air Cleaner Strap, ensuring that the air cleaner assembly remains securely attached.
• QSB5.9 44 CM550 and QSB5.9 CM850: These engines also benefit from the use of the 3937371 Air Cleaner Strap. This part is engineered to fit these models, providing a consistent and dependable connection that supports the air cleaner’s function.

By ensuring that the air cleaner assembly is properly secured, the 3937371 Air Cleaner Strap helps maintain the efficiency of the engine’s air intake system, contributing to overall engine performance and reliability.

Role of Part 3937371 Air Cleaner Strap in Engine Systems

The 3937371 Air Cleaner Strap is an integral component in the assembly and functionality of various engine systems. It securely holds the air cleaner in place, ensuring a stable and efficient air intake process. This strap is particularly significant in the following engine components and systems:

Arrangement and Stability

The strap contributes to the proper arrangement of the air cleaner, maintaining its position relative to other components. This stability is essential for the consistent performance of the air intake system, which directly influences engine efficiency.

Oil Fill and Breather Systems

In engines with an oil fill and breather arrangement, the 3937371 strap ensures that the air cleaner remains in the correct position. This is important for the breather system’s functionality, which relies on a steady airflow to manage crankcase ventilation.

Crankcase and Breather Housing

The strap’s role extends to the crankcase and breather housing, where it helps in maintaining the integrity of the air cleaner’s connection to these components. This is vital for the effective operation of the breather system, which is responsible for expelling moisture and contaminants from the crankcase.

Cover and Cam Follower

When integrated with a cover and cam follower kit, the air cleaner strap ensures that the air cleaner does not interfere with the operation of these components. This is particularly important in high-performance engines where precise component alignment is necessary.

Front and Side Oil Catch Kits

In engines equipped with front or side oil catch kits, the strap plays a role in preventing the air cleaner from obstructing the oil catch system. This is essential for maintaining clean oil and ensuring the longevity of engine components.

Long Block Assembly

In a long block assembly, where the engine is essentially a complete unit minus ancillary components, the 3937371 strap ensures that the air cleaner is correctly positioned. This is important for the overall balance and performance of the engine.

Conclusion

In summary, the 3937371 Air Cleaner Strap is a key component in various engine systems, contributing to the stability and efficiency of the air intake process across different engine configurations. Regular maintenance and the use of genuine Cummins parts ensure the longevity and optimal performance of the engine.