Dorman 902-5958 Automatic Transmission Oil Cooler Thermostat

Overview of Dorman Automatic Transmission Oil Cooler Thermostat

The Dorman 902-5958 automatic transmission oil cooler thermostat is designed specifically for BMW X5 and X6 models. This thermostat helps regulate transmission fluid temperature to maintain optimal performance and protect your vehicle's transmission system.

• Durable construction with plastic and steel materials
• Single port design with 1.622 inch outside diameter
• Thermostat opens at 200 degrees Fahrenheit for precise temperature control
• Includes 2 gaskets, 1 thermostat housing, and 1 thermostat for complete installation
• Overall length of 3.337 inches for exact fitment
• Compatible with BMW X5 and X6 models

Detailed Product Description

The Dorman 902-5958 automatic transmission oil cooler thermostat features a robust combination of plastic and steel materials to ensure durability and reliable operation under high-temperature conditions. The thermostat is engineered to open at 200 degrees Fahrenheit, allowing transmission fluid to flow through the cooler only when necessary, which helps maintain optimal transmission temperature and prevents overheating. The single port design with a 1.622 inch outside diameter ensures a precise fit within the transmission cooling system. This kit includes two gaskets, a thermostat housing, and the thermostat itself, providing all necessary components for a proper replacement. The overall length of 3.337 inches matches OEM specifications for seamless integration into BMW X5 and X6 vehicles.

Compatible Vehicles and Applications

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

• BMW X5
• BMW X6

Use this part number 902-5958 when searching for a replacement thermostat for these specific models to ensure compatibility and proper function.

Common Issues Addressed by This Thermostat

• Transmission overheating due to faulty thermostat operation
• Delayed transmission fluid flow to the cooler
• Erratic transmission temperature fluctuations
• Premature transmission wear caused by improper cooling
• Leaks or damage in the thermostat housing assembly

Installation Notes and Tips

• Ensure the engine is cool before beginning installation to avoid burns
• Replace both gaskets included in the package to prevent leaks
• Verify the thermostat orientation matches OEM specifications
• Inspect the transmission cooler lines for damage during installation
• Test transmission fluid temperature after installation to confirm proper operation

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 902-5958 automatic transmission oil cooler thermostat undergoes rigorous quality control to ensure fit, form, and function. Please refer to Dorman's warranty policy for specific coverage details.