Nissens 90838 Automatic Transmission Oil Cooler - Front

Nissens 90838 Automatic Transmission Oil Cooler

The Nissens 90838 automatic transmission oil cooler is built with an aluminum core and precise OE-style dimensions for front-mounted applications. It is a direct-fit cooling component for select BMW models, including BMW 550i and BMW 650i applications, where stable transmission fluid temperature is critical.

Key Features

• Aluminum construction for efficient heat transfer
• Front position fitment for the listed BMW applications
• Core dimensions: 2.8000 in. height, 2.3600 in. width, and 6.6500 in. length
• 31-core row quantity for transmission fluid cooling performance
• 0.55 in. inlet and outlet diameters
• No gasket or seal included
• Part number 90838 for easy identification and ordering

Detailed Description

Nissens 90838 is an automatic transmission oil cooler engineered for thermal management in the transmission circuit. Nissens develops and manufactures thermal and engine-efficiency components to consistent quality standards, and this cooler reflects that focus with an aluminum core and application-specific sizing. It is a strong match for front-mounted BMW cooling layouts, including BMW 550i, BMW 650i, BMW 650i Gran Coupe, BMW 650i xDrive, BMW 650i xDrive Gran Coupe, and BMW 550i GT models. This part number 90838 also helps simplify cross-checking during service work and parts lookup.

This part cross-references BMW OE numbers 17117583846 and 17217597891 for the same application.

What It Helps Address

• Transmission fluid overheating during normal driving or load conditions
• Reduced cooling efficiency from a damaged or restricted cooler
• Fluid temperature instability that can affect shift quality
• Leak-related service needs at the front cooling assembly
• Replacement needs on BMW 550i and BMW 650i cooling systems

Installation Notes and Tips

Verify front-position fitment against the vehicle’s original cooler before installation. Inspect the cooler lines, mounting points, and surrounding cooling components for wear or contamination, and confirm the inlet and outlet connections match the OE layout. Because no gasket or seal is included, reuse only serviceable sealing components or source the correct seals separately as required by the vehicle.

Quality Assurance

Nissens positions its products around thermal-system engineering and controlled manufacturing standards. The 90838 automatic transmission oil cooler is built to support OE-style service replacement on the listed BMW applications, including BMW 550i and BMW 650i models.