Nissens 91178 Automatic Transmission Oil Cooler

Nissens 91178 Automatic Transmission Oil Cooler

The Nissens 91178 automatic transmission oil cooler is built with an aluminum core and compact dimensions for direct-fit service on select Land Rover applications. It is engineered to manage transmission fluid temperature in demanding driving conditions, helping maintain stable operation in the cooling circuit.

Compatible with 2015-2016 Land Rover LR4, this Nissens transmission oil cooler is a focused replacement for vehicles that need reliable fluid heat exchange. The 91178 is also cross-referenced to LR013722 for the same application.

Key Features

• Aluminum construction for efficient heat transfer and corrosion resistance
• Core dimensions: 6.5700 length, 3.2300 width, and 2.9100 height
• 22-core row design for transmission fluid cooling performance
• 0.47 inlet diameter and 0.47 outlet diameter
• Direct replacement format for select Land Rover LR4 automatic transmission cooling service
• Part number 91178 for accurate ordering and catalog matching

Product Details

Nissens develops thermal management components with a focus on OE-style fit and consistent manufacturing quality. The 91178 automatic transmission oil cooler uses an aluminum core to transfer heat efficiently from transmission fluid, supporting temperature control in the vehicle’s cooling system. For 2015-2016 Land Rover LR4 models, this cooler provides a practical replacement option when servicing the transmission cooler circuit. Part number 91178 and the LR013722 cross-reference help confirm application matching during lookup and installation planning.

Common Issues This Part Can Address

• Transmission fluid running hotter than normal
• Reduced cooling efficiency in the transmission cooler circuit
• Leak-related replacement needs at the cooler assembly
• Service replacement for a damaged or restricted oil cooler
• Temperature control concerns during towing or stop-and-go driving

Installation Notes and Tips

Verify the cooler dimensions, inlet and outlet sizes, and vehicle application before installation. Inspect the transmission lines, seals, and surrounding cooling components for wear or contamination during service. This part is listed without a gasket or seal included, so confirm all required sealing components separately before beginning the repair.

Quality Assurance

Nissens positions its aftermarket thermal components around consistent manufacturing standards and ongoing product development. The 91178 reflects that approach with a purpose-built aluminum cooler for select Land Rover LR4 applications and accurate catalog identification through part number 91178.