Nissens 90658 Automatic Transmission Oil Cooler

Overview of Nissens Automatic Transmission Oil Cooler 90658

The Nissens Automatic Transmission Oil Cooler 90658 is engineered for reliable cooling performance in select BMW models. Designed with precision, this aluminum cooler supports optimal transmission temperature management for vehicles such as the BMW 540i, 740i, 740iL, and 750iL.

• Constructed from durable aluminum for efficient heat dissipation
• Core dimensions: 6.38 inches length, 4.45 inches height, and 3.86 inches width
• Features 11 core rows to maximize cooling surface area
• Inlet diameter of 0.73 inches and outlet diameter of 0.43 inches for proper fluid flow
• Includes gasket or seal to ensure leak-free installation

Detailed Product Description

The Nissens 90658 automatic transmission oil cooler is designed to maintain transmission fluid at optimal temperatures, preventing overheating and extending transmission life. Its aluminum construction offers lightweight durability and excellent thermal conductivity. The cooler’s core measures 6.38 inches in length, 4.45 inches in height, and 3.86 inches in width, with 11 rows that provide a large surface area for effective heat exchange. The inlet and outlet diameters of 0.73 inches and 0.43 inches respectively ensure proper fluid circulation within the cooling system. This part includes a gasket or seal to facilitate a secure and leak-resistant fit during installation.

Compatible Vehicles and Applications

This automatic transmission oil cooler is compatible with the following BMW models:

• BMW 540i
• BMW 740i
• BMW 740iL
• BMW 750iL

It is specifically designed to meet the cooling requirements of these vehicles, ensuring proper transmission fluid temperature regulation under various driving conditions.

Common Issues Addressed by Nissens 90658

• Prevents transmission fluid overheating during heavy use or high ambient temperatures
• Reduces risk of transmission damage caused by excessive heat
• Helps maintain consistent transmission performance and shifting quality
• Minimizes fluid degradation and extends transmission service intervals
• Addresses leaks or failures in the original transmission oil cooler

Installation Notes and Tips

• Ensure compatibility with BMW 540i, 740i, 740iL, or 750iL before installation
• Use the included gasket or seal to prevent leaks and ensure a tight fit
• Inspect transmission fluid lines and connections for wear or damage during installation
• Follow manufacturer torque specifications for mounting hardware
• Flush transmission fluid system if recommended to maintain fluid cleanliness

Quality Assurance and Warranty

Nissens manufactures this automatic transmission oil cooler to meet OEM standards for fit, form, and function. The aluminum construction and precise core design contribute to reliable performance and durability. This part number 90658 includes a gasket or seal to support proper installation. Warranty coverage details should be confirmed with the distributor or installer, as they may vary by region.