BMW 3 5 Series E90 E92 LCI F10 Auto Gearbox Oil Cooler Heat Exchanger 8512435

The BMW 3 and 5 Series Automatic Transmission Oil Cooler is an original heat exchanger designed for E90, E92 LCI, and F10 models with automatic transmissions. This component from the Oil Coolers and Hoses group is responsible for stabilizing the transmission oil temperature, which translates to smoother drivetrain operation and longer component lifespan.

Specifications and technical data

• SKU: 8512435
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8512435
• Substitutable numbers: 11428512435, 8512435, PK
• Category: Engine Oil Coolers & Lines

Purpose and Function in the Drivetrain

The presented heat exchanger is specifically designed for automatic transmissions in BMW 3 Series E90/E92 LCI and 5 Series F10 models. Its function is to efficiently dissipate excess heat from the transmission oil through thermal exchange with the engine cooling system. Maintaining a stable transmission oil temperature:

• limits the risk of automatic transmission overheating,
• improves gear shifting smoothness,
• supports the durability of clutch plates and control valves,
• reduces the risk of costly transmission failures.

Original BMW Manufacturing and Compatibility

As a BMW branded component, the automatic transmission oil cooler is precisely matched to the factory mounting points and connections in the mentioned generations of the 3 and 5 Series. This means:

• preservation of the original flow geometry for oil and coolant,
• easier installation without the need for system modifications,
• consistency with the factory operating parameters of the drivetrain.

Therefore, replacing a worn-out heat exchanger with the presented model allows for the restoration of proper thermal operating conditions for the automatic transmission, which is particularly important in vehicles used in urban traffic and under higher loads.

Performance Characteristics of a Used Component

The offered heat exchanger is a used part, allowing for an economical repair of the oil cooling system while maintaining the original BMW specifications. This type of solution is particularly beneficial for:

• routine maintenance on older 3 and 5 Series models,
• restoring functionality after automatic transmission overheating,
• comprehensive servicing of the oil cooling system and hoses.

Choosing a used heat exchanger that matches the factory markings ensures proper flow and heat exchange parameters, which directly impacts the stability of the automatic transmission's operation.

Importance of the Automatic Transmission Oil Cooler in BMW Operation

In modern BMW 3 and 5 Series models, the automatic transmission operates across a wide range of loads and temperatures. An efficient heat exchanger:

• supports maintaining the correct transmission oil viscosity,
• limits the decrease in transmission performance at high ambient temperatures,
• allows for better utilization of the engine's potential,
• contributes to driving comfort through stable and predictable gear changes.

For users who want to consciously care for their cooling and drivetrain systems, replacing a worn-out oil cooler with a functional OEM part is a sensible investment in the long-term operation of the vehicle.

Expanding Knowledge and Selecting Parts from the Same Group

If you are planning a comprehensive repair or upgrade of the cooling system area in your BMW and need other parts from the same group, such as additional heat exchangers, oil hoses, or connection elements, check the available parts in the BMW Oil Coolers and Hoses category.

To better understand how operating temperature affects the durability of the cooling system and why appropriately selected used components can be a sensible service choice, it is worth reading the guide Summer Heat vs. Cooling System: Used Coolers and Fans for Savings, which discusses practical aspects of operating and selecting cooling components.