BMW F20 F21 F30 F31 LCI Transmission Gearbox Oil Cooler 8514515

BMW F20 F21 F30 F31 LCI Transmission Gearbox Oil Cooler is an original drivetrain component designed to work with the automatic transmission in BMW F-series models. Thanks to its design, it ensures stable cooling of the transmission oil, which translates into safe transmission operation and reduces the risk of overheating. This is a solution for users looking for a proven OEM component instead of universal replacements.

Specifications and technical data

• SKU: 8514515-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8514515
• Substitutable numbers: 17218514515, 8514515
• Gearbox type: Automatic
• Category: Oil Coolers & Lines

Function and role of the automatic transmission oil cooler

The transmission oil cooler in the BMW F-series is responsible for dissipating excess heat from the transmission oil during automatic gearbox operation. Maintaining a stable temperature of the lubricating medium:

• reduces wear on friction elements and seals,
• stabilizes the operation of the mechatronics and control valves,
• reduces the risk of jerking and delays during gear shifts,
• allows for maintaining proper oil viscosity parameters across a wide range of loads.

For modern BMW automatic transmissions, maintaining the correct oil temperature is crucial for preserving smooth operation and predictable performance of the drivetrain.

Construction and fitment for BMW F20 / F30 LCI

The presented cooler has been designed specifically for the F-generation, which means it fits factory mounting points and has the correct connection geometry. As a result, installation is straightforward, without the need for modifications to the oil system or additional adapters.

The component belongs to the Oil coolers and lines group, which facilitates integration with other oil cooling system components in the vehicle. The design intended for use with an automatic transmission ensures proper flow and cooling efficiency under typical operating conditions of the BMW F-series.

Benefits of using an original BMW cooler

Using an original transmission oil cooler in the BMW F20 / F30 LCI provides a number of practical benefits:

• Compatibility with the automatic transmission system – flow and cooling parameters adapted to the characteristics of BMW gearboxes.
• Consistency with the factory oil cooling system – proper connection with lines and other elements from the Oil coolers and lines group.
• Reduction of overheating risk – especially important during city driving, towing, or dynamic operation.
• Better predictability of transmission operation – stable oil temperature promotes smooth gear shifting and repeatable response times.

For users who want to keep their car in a configuration close to the factory state, choosing a BMW component instead of a random replacement is a more predictable solution in terms of operating parameters.

Component condition and service application

The offered cooler comes from the BMW parts group and is intended for service applications in vehicles equipped with an automatic transmission. It is suitable both for planned replacement as part of preventative maintenance and for repairs following an oil cooling system failure, when it is necessary to restore proper circulation and heat dissipation.

It is always worth verifying the selection of the correct component for a specific engine/transmission version based on vehicle data and information contained in the technical specification to ensure full installation and functional compatibility.

More about the cooling system and related components

If you want to better understand how the oil cooler works with other cooling system components and how it affects the durability of the powertrain and transmission, it is worth checking out our guide. A practical discussion of overheating symptoms, diagnostic principles, and the role of oil coolers can be found in the article Engine cooling system – overheating, repair, and used coolers, which covers, among other things, solutions used in popular BMW models and other brands.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your BMW and need other elements from the same group, such as additional oil coolers, oil lines, or oil cooling system connectors, check out the available parts in the BMW oil coolers and lines category.