Nissens 90991 Engine Oil Cooler

Nissens 90991 Engine Oil Cooler

The Nissens 90991 engine oil cooler is an aluminum thermal management component built for precise oil temperature control in select Mini applications. It is engineered for 2014-2016 Mini Cooper Countryman, 2014-2016 Mini Cooper Paceman, and 2014-2015 Mini Cooper models, making it a direct-fit option for owners searching for a Mini Cooper oil cooler replacement or a Nissens 90991 engine oil cooler.

Key Features

• Aluminum construction for efficient heat transfer and corrosion resistance
• Core dimensions: 3.7400 in. height, 1.8100 in. width, and 5.43 in. length
• Designed with 4 O-ring locations for proper sealing at installation points
• OE-style replacement for select Mini Cooper, Mini Cooper Countryman, and Mini Cooper Paceman applications
• Cross-references Genuine 11427552687 for the same application

Detailed Description

Built by Nissens, a manufacturer focused on thermal and engine efficiency components, part number 90991 is an engine oil cooler intended to help maintain stable oil temperatures under normal driving and higher-load conditions. The aluminum core supports heat dissipation, while the compact core size helps it package correctly in the vehicle’s cooling system. For shoppers comparing Mini Cooper Countryman oil cooler replacement parts or looking up Nissens 90991, this unit provides a direct application match for the listed Mini models.

Compatible With 2014-2016 Mini Cooper Countryman, N/A; 2014-2016 Mini Cooper Paceman, N/A; and 2014-2015 Mini Cooper, N/A. This part also cross-references Genuine 11427552687 for the same application.

What It Helps Address

• Oil temperature rise during stop-and-go driving
• Reduced cooling efficiency in a worn or leaking oil cooler
• Oil seepage at sealing surfaces related to aged O-rings or cooler wear
• Temperature instability that can affect engine lubrication performance
• Replacement needs after contamination or internal cooler damage

Installation Notes and Tips

Confirm the vehicle’s year, model, and engine-specific cooling layout before ordering. Inspect mating surfaces, seals, and adjacent cooling components during replacement, and verify that the cooler seats correctly before final assembly. Because this is a precision thermal component, cleanliness during installation is important to help prevent leaks and contamination.

Quality Assurance

Nissens develops and manufactures thermal management components to consistent aftermarket standards, with a focus on fit, function, and material quality. Part number 90991 is produced as a quality replacement for the listed Mini applications.