BMW F06 F12 F13 Gearbox Cooler Oil Transmission Cooling Radiator 7638679

BMW F06 F12 F13 Gearbox Cooler Oil Transmission Cooling Radiator is an original component from the Oil coolers and lines group, designed for efficient heat dissipation from the automatic transmission in BMW 6 Series models. Maintaining a stable transmission oil temperature translates into smooth gear shifting, longer transmission service life, and safe operation of the entire drivetrain.

Specifications and technical data

• SKU: 7638679
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7638679
• Substitutable numbers: 7638679, 17217638679
• Category: Oil Coolers & Lines

Purpose and function of the gearbox oil cooler

The presented gearbox oil cooler is designed for BMW F06, F12, and F13 models equipped with an automatic transmission. This component is responsible for stabilizing the transmission oil temperature, which is crucial during dynamic driving, high loads, and in urban conditions with frequent stop-and-go traffic.

Thanks to efficient heat exchange, the cooler reduces the risk of transmission overheating, which helps maintain smooth operation, gear shifting precision, and reduces wear on internal components.

Benefits of using an original BMW cooler

The original BMW gearbox oil cooler provides:

• Factory fitment for the transmission cooling system in the BMW F06, F12, and F13, with no modifications required.
• Seamless compatibility with existing oil lines and body mounts.
• Operating parameters consistent with the manufacturer's specifications, which facilitates maintaining a stable oil temperature across a wide range of loads.

For users, this means predictable transmission behavior, reduced risk of thermal failure, and the ability to maintain the driving characteristics typical of the BMW 6 Series.

Characteristics of the used component

The offered cooler comes from the secondary market, which allows for economical repair of the gearbox cooling system while maintaining the original BMW design. A used component is a good choice when the factory cooler has suffered mechanical damage or shows leaks, and the priority is to maintain compliance with the OEM solution.

Choosing an original, used cooler instead of a replacement allows you to maintain factory geometry, mounting points, and oil line routing, which facilitates installation and future service.

High-temperature operation and service aspects

In modern BMW automatic transmissions, oil temperature control is of particular importance during the summer and during intensive use. A functional gearbox oil cooler helps reduce the drop in oil viscosity, which translates into stable pressure in the hydraulic system and repeatable operation of clutches and control valves.

When planning service work, it is worth considering checking the condition of oil lines, mounts, and any external debris on the cooler fins to maintain its heat exchange efficiency at the appropriate level. Additional information on the impact of temperature on the cooling system and the cost-effectiveness of using secondary market components can be found in the guide Summer heat vs. cooling system: used coolers and fans as a guarantee of savings.

Expanding the BMW oil cooling system

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