CUMMINS 3959031 Oil Cooler Qsb 5.9L

( Brand: Cummins ), ( Manufacturer Part Number: 3959031 ), ( Type: Oil Cooler )

Review CUMMINS Oem Oil Cooler Qsb 5.9l

The Cummins QSB 5.9L Oil Cooler, part number 3959031, is a crucial component in maintaining the optimal operating temperature of the engine oil in Cummins QSB 5.9-liter engines. This oil cooler is designed to enhance the engine's cooling system, ensuring that the oil stays within an ideal temperature range, which is essential for prolonging engine life and maintaining peak performance.

Constructed from heavy-duty materials, the oil cooler features a robust, tubular core with an impressive cooling capacity. The cooling fins are strategically designed to maximize surface area, allowing for efficient heat dissipation. The cooler is also equipped with a pressure tested, reinforced header tank that securely holds the engine coolant.

The QSB 5.9L Oil Cooler is designed to fit seamlessly into the engine compartment, with a compact, yet efficient design. The cooler comes with all necessary mounting hardware, making the installation process straightforward and hassle-free. The cooler is also compatible with a wide range of aftermarket radiators, providing flexibility for custom engine builds.

The 3959031 oil cooler is manufactured to meet the highest standards of quality and durability. It features a corrosion-resistant finish, ensuring that it can withstand the rigors of heavy-duty use in various environments. Additionally, the cooler is OEM approved, meaning it is a direct replacement for the original equipment cooler, ensuring a perfect fit and function.

In summary, the Cummins 3959031 Oil Cooler is an essential component for maintaining the cooling system of Cummins QSB 5.9-liter engines. Its robust, efficient design, and compatibility with various aftermarket components make it an excellent choice for those seeking optimal engine performance and longevity.

Cummins 3959031 Oil Cooler QSB 5.9L: A Comprehensive Analysis

The Cummins 3959031 oil cooler is a critical component in the cooling system of 5.9L Cummins engines. This analysis aims to provide you with a clear understanding of the benefits and drawbacks of purchasing this oil cooler.

1. Enhanced Cooling Performance: The Cummins 3959031 oil cooler is designed to provide superior cooling efficiency, ensuring that the engine oil temperature remains within the optimal range. This results in extended engine life and improved overall performance.

2. Durable Construction: This oil cooler is engineered to withstand the rigors of heavy-duty use. It features robust materials, such as cast aluminum, to ensure long-lasting durability.

3. Easy Installation: The Cummins 3959031 oil cooler is designed for easy installation. It comes with all necessary hardware, making it a straightforward process for most users.

4. OEM Quality: This oil cooler is a direct replacement for the original equipment manufacturer (OEM) part, ensuring a perfect fit and function.

5. Reduced Engine Wear: By maintaining optimal engine oil temperature, this oil cooler helps to reduce engine wear and tear, leading to fewer repairs and maintenance costs over time.

1. Cost: Compared to some aftermarket alternatives, the Cummins 3959031 oil cooler can be quite expensive. This may be a deterrent for those on a budget.

2. Limited Availability: Depending on your location or the availability at your local parts store, you may have difficulty finding this specific oil cooler model in stock.

3. No Upgrade Options: If you're looking for an oil cooler with additional features or upgrades, this may not be the best option for you. The Cummins 3959031 oil cooler is a standard replacement part.

The Cummins 3959031 oil cooler is an excellent choice for those seeking a reliable, durable, and high-performing oil cooler for their 5.9L Cummins engine. While it may come with a higher price tag compared to some alternatives, its OEM quality, superior cooling performance, and robust construction make it a worthwhile investment for those who prioritize engine reliability and longevity.

If you're in the market for a new oil cooler for your 5.9L Cummins engine and are looking for a reliable, high-performing option, the Cummins 3959031 oil cooler is an excellent choice. Its enhanced cooling capabilities, durable construction, and easy installation make it a solid investment for those who value engine performance and longevity. However, if budget is a concern, consider exploring aftermarket alternatives or shopping around for deals and discounts.

Details:

This came off 2005 5.9 Cummins The OEM 3959031 Oil Cooler is a high-quality replacement part specifically designed for the QSB 5.9L engine. With its manufacturer part number 3959031, this product is guaranteed to fit and function properly, making it a reliable choice for commercial truck owners looking maintain their engines cooling system. Made by the trusted brand Cummins, this oil cooler ensures optimal engine performance and durability.

part #: 3959031 prices

• $189.65-$399.90

specifications coenginecooling:

• brand: Cummins
• mpn: 3959031
• type: Oil Cooler

payments coenginecooling:

• wallet: Apple-pay
• credit card: Diners-club
• other

returns coenginecooling:

• paid by: Buyer
• policy: Returns Accepted
• time: 30 Days

seller coenginecooling:

• city: Solsberry, Indiana
• rating: 99.4%
• # reviews: 304

offer coenginecooling:

• started: January 10, 2026
• best offers: True
• availability: In Stock
• sold: 0
• options: Ship-to-home
• quantity: 1

shipping coenginecooling:

• transit: 6-11 Days
• service: USPS Ground Advantage
• type: Calculated
• carrier: USPS
• class: Standard
• cost: $10.58

general coenginecooling:

• condition: Used
• Commercial Truck Parts > Engine Cooling > Oil Coolers

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