PETERBILT F31-1183 Cooler Trans Oil Lfna

( Part Type: Oil Cooler Tran ), ( Manufacturer Part Number: F31-1183 )

Review PETERBILT Cooler Trans Oil Lfna

The Peterbilt F31-1183 Cooler Trans Oil LFNA, or Low Flow Neutral Air, is a critical component of the engine cooling system in select Peterbilt Class 5 and Class 6 trucks. This oil cooler is specifically designed to maintain optimal operating temperatures for the transmission and hydraulic system by effectively removing heat from the oil as it circulates through the system.

The F31-1183 Cooler Trans Oil LFNA is constructed of high-quality materials, including a robust aluminum core with a durable, corrosion-resistant finish. The cooler's tubes are finned for maximum surface area, allowing for efficient heat dissipation. This design enables the cooler to effectively manage heat buildup under heavy loads or during extended periods of operation, ensuring the longevity and optimal performance of the transmission and hydraulic system.

The low flow neutral air (LFNA) designation refers to the cooler's ability to utilize neutral air for cooling. Neutral air is the air temperature that is equal to the oil temperature, allowing for the most efficient cooling possible. By utilizing neutral air, the F31-1183 Cooler Trans Oil LFNA can maintain a consistent oil temperature, reducing the workload on the engine and improving overall fuel efficiency.

The cooler is designed to be easily accessible for maintenance, with a mounting orientation that facilitates inspection and service. It is also compatible with a wide range of transmission and hydraulic systems, making it a versatile option for various applications.

In summary, the Peterbilt F31-1183 Cooler Trans Oil LFNA is an essential component for maintaining the performance and longevity of the transmission and hydraulic system in select Peterbilt Class 5 and Class 6 trucks. Its robust construction, efficient cooling design, and easily accessible mounting orientation make it a reliable and effective solution for managing heat buildup and ensuring optimal system performance.

The Peterbilt F31-1183 cooler transmission oil LFNA (Liquid-to-Air Aftercooler) is an essential component for enhancing the cooling system's efficiency in heavy-duty trucks. Here are some pros and cons of investing in this specific aftercooler.

1. Improved Cooling Efficiency: The LFNA cools the transmission oil before it enters the transmission, reducing the operating temperature of the transmission and extending its lifespan. This results in better fuel economy and increased power output.

2. Durability: Peterbilt is known for its high-quality and robust components, and the F31-1183 cooler is no exception. It is designed to withstand the rigorous conditions of heavy-duty applications, ensuring long-lasting performance.

3. Easy Installation: The LFNA can be installed on most Peterbilt models with minimal modifications, making it a popular choice for upgrading existing trucks.

4. Enhanced Performance: By reducing transmission temperatures, the LFNA contributes to better overall performance, enabling the vehicle to haul heavier loads and handle more challenging terrain.

1. Cost: The Peterbilt F31-1183 cooler is a premium aftermarket component, and its price tag reflects its high-performance capabilities. The upfront cost may be a barrier for some buyers.

2. Maintenance: While the LFNA is designed to be durable, it still requires regular maintenance, such as oil changes and filter replacements, to ensure optimal performance.

3. Complexity: Installing the LFNA may require specialized knowledge and tools, making it a more involved process compared to some other aftermarket upgrades.

In conclusion, the Peterbilt F31-1183 cooler transmision oil LFNA is a valuable investment for heavy-duty truck owners seeking improved cooling efficiency, enhanced performance, and durability. While the upfront cost and complexity of installation may be drawbacks, the long-term benefits, including extended transmission lifespan and better fuel economy, make this aftercooler a worthwhile consideration.

Recommendation: If you operate a heavy-duty truck and are looking to improve cooling efficiency, increase performance, and extend the lifespan of your transmission, the Peterbilt F31-1183 cooler transmision oil LFNA is a solid choice. Be prepared for the upfront cost and installation complexities, but know that you'll be rewarded with long-term benefits and improved overall performance.

part # f311183 price

• $3007.03

specifications atvsienna:

• for makes: Peterbilt
• part type: Oil Cooler Tran
• manufacturer part number: F31-1183

shipping atvsienna:

• service: Standard
• transit: 3-8 Days
• cost: $0.00
• class: Standard
• type: Fixed

seller atvsienna:

• rating: 98.9%
• # reviews: 60165

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

offer atvsienna:

• quantity: 1
• availability: In Stock
• best offers: True
• sold: 0
• started: December 2, 2025
• options: Ship-to-home

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general atvsienna:

• ATV, Side-by-Side UTV Parts Accessories > Engines Engine Parts > Other Engine Parts
• condition: New

Peterbilt F31-1183 Is Similar To:

• Asi Performance F31-6049 Charge Air Cooler Fit 1995-2008 Peterbilt 357 379 385/ 2001 377 (23.4% similar) $899.00. (February 10th, 2026)