BMWE60 E61 E65 X3 E83 Oil Cooler Heat Exchanger Auto Gearbox 7800479

The BMW E60 E65 E83 Diesel Oil Cooler is an original lubrication system component designed for use with diesel engines and automatic transmissions. It ensures stable heat dissipation from the oil, which translates to safe engine and transmission operation under demanding conditions. This solution is dedicated to users who expect factory fitment and predictable performance parameters.

Specifications and technical data

• SKU: 7800479
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7800479
• Substitutable numbers: 7800479, 17217800479, 7803830, 17217803830, 2249465, 17212249465, 13517636881, 7636881, 13518621083, 8621083
• Gearbox type: Automatic
• Category: Engine Oil Coolers & Lines

Purpose and Function in the Lubrication System

The oil cooler in BMW E60, E65, and E83 models is responsible for controlling engine or transmission oil temperature, stabilizing the powertrain's operating conditions. Maintaining the correct oil temperature range reduces the risk of viscosity loss, decreases wear on cooperating components, and supports even lubrication across the entire load spectrum.

In vehicles equipped with an automatic transmission, a properly functioning oil cooler is of particular importance, as the transmission generates additional thermal load. An efficient heat exchanger helps maintain stable gear shifting characteristics and reduces the risk of transmission overheating during city driving, towing, or dynamic acceleration.

Construction and Fitment for BMW

This component belongs to the Oil Coolers and Hoses group, meaning it interacts with the oil system through appropriately routed channels and connections. The design is tailored to specific BMW technical solutions, ensuring correct mounting points, connection diameters, and geometry adapted to the engine bay of the E60, E65, and E83 series.

Its original BMW origin promotes compatibility with factory oil cooling system operating parameters. This facilitates installation without the need for modifications and minimizes the risk of leaks resulting from imprecise fitting.

Benefits of Using an Original Oil Cooler

Using a dedicated oil cooler in BMW vehicles with diesel engines and automatic transmissions offers a range of practical benefits:

• maintaining stable oil temperature across a wide range of loads,
• reducing the risk of engine and transmission overheating,
• preserving predictable automatic transmission operation during gear changes,
• factory fitment to mounting points and oil lines,
• consistency with other components of the lubrication and cooling systems.

For users who want to better understand the impact of the cooling system on powertrain durability, an article describing typical overheating symptoms and the role of heat exchangers will be helpful – check out the material: Engine Cooling System – Overheating, Repair, and Used Coolers.

Condition, Verification, and Service Application

The offered oil cooler is a used BMW part, allowing for economical repair while maintaining original construction. Such components are often chosen by professional workshops specializing in the brand, where compliance with factory solutions and predictable installation are paramount.

Before installation, the standard service procedure is recommended: checking system tightness, assessing the condition of oil lines, and replacing the lubricating medium according to the vehicle manufacturer's recommendations. Properly performed oil cooler replacement helps restore stable engine and transmission operating conditions, which is particularly important in vehicles used for long-distance travel or under heavy load.

Expanding the Oil Cooling System in BMW

If you are planning a comprehensive repair or modernization of the engine area in your BMW and need other parts from the same group, such as additional oil coolers, oil lines, or heat exchangers, check the available parts in the BMW Oil Coolers and Hoses category.