BMW F20 F21 F30 F31 LCI Transmission Oil Cooler Gearbox 8514515

The BMW F20 F21 F30 F31 LCI Transmission Oil Cooler 8514515 is an original part from the Oil Coolers and Hoses group, designed for automatic transmissions in post-facelift (LCI) BMW F-series models. It ensures stable heat dissipation from the transmission fluid, contributing to the safe operation and extended lifespan of the automatic gearbox.

Specifications and technical data

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

Application and Function in the Drivetrain

The presented oil cooler is a component of the automatic transmission's thermal management system, responsible for maintaining a stable transmission fluid temperature during city driving, highway cruising, and under increased load conditions. A properly functioning cooler reduces the risk of overheating, which helps preserve smooth gear changes, correct hydraulic system pressure, and predictable transmission control.

For post-facelift BMW F-series vehicles, maintaining the correct transmission fluid temperature is crucial for the durability of the gearbox, the quality of mechatronic operation, and the protection of other drivetrain components. Replacing a worn or leaking heat exchanger with a functional part restores stable operating conditions for the transmission and reduces the risk of costly future repairs.

Benefits of Using an Original Oil Cooler

Using an original oil cooler specifically designed for automatic transmissions in BMW F-series vehicles ensures:

• factory-perfect fit for the transmission fluid cooling system,
• proper integration with oil lines and body mountings,
• adequate heat dissipation performance under typical and elevated loads,
• consistency with the vehicle manufacturer's design specifications.

This allows for an organized installation without the need for system modifications, and the system maintains near-factory performance. This is particularly important in vehicles equipped with automatic transmissions, where stable thermal conditions impact the overall refinement and durability of the entire gearbox.

Characteristics of a Used Component

The offered oil cooler is a used part, sourced from disassembly, which combines original quality with an attractive purchase price. This type of solution is often chosen for servicing automatic transmissions in several-year-old vehicles, where both compliance with factory specifications and reasonable operating costs are important.

Before installation, a standard workshop procedure is recommended: checking for leaks, cleaning oil channels, inspecting connection points, and using new seals according to service practice. This allows for the full utilization of the part's potential and ensures stable operation of the transmission fluid cooling system.

Technical Support and Additional Information

When selecting an oil cooler for a specific BMW F-series version, it's advisable to consider the type of automatic transmission used and the cooling system configuration of that particular vehicle. If in doubt, comparing the design and connections with the currently installed part and consulting a mechanic specializing in the BMW brand can be helpful.

If you are planning a comprehensive repair or upgrade of the transmission fluid cooling system in your BMW and require other parts from the same group, such as additional heat exchangers, oil lines, or connectors, please check the available parts in the BMW Oil Coolers and Hoses category.

To better understand the impact of temperature on the cooling system and the operation of used components, it is recommended to read the guide Summer Heat vs. Cooling System: Used Coolers and Fans for Savings, which discusses practical aspects of selecting and using such parts.

For those considering broader use of disassembled parts in vehicles of this brand, the article Used Parts for BMW – Is It Worth It? Key Benefits for Brand Enthusiasts, describing the economic and operational advantages of such a solution, may also be helpful.