Audi A8L D4 3.0 TDI CBTA Engine Oil Cooler 059117021R

Audi A8L D4 3.0 TDI CBTA Engine Oil Cooler is a lubrication system component designed for the diesel engine, responsible for stabilizing the operating oil temperature. Thanks to the original Audi design, the cooler supports safe engine operation, reducing the risk of oil overheating under heavy loads. It is a technical solution that helps maintain lubrication system efficiency in demanding operating conditions.

Specifications and technical data

• SKU: 059117021R
• Mark: Audi
• Condition: Used
• OEM Part Number: 059117021R
• Substitutable numbers: 059117021R, 059 117 021 R
• Fuel type: Diesel
• Category: Engine Oil Coolers & Lines

Purpose and role in the lubrication system

The oil cooler in the Audi A8L D4 3.0 TDI CBTA operates within the engine oil circuit, which is responsible for lubricating, cooling, and protecting moving parts. Maintaining the correct oil temperature is crucial for:

• pressure stability in the lubrication system,
• reducing wear of mating components,
• maintaining the oil's viscosity properties under high loads,
• reducing the risk of carbon deposits and thermal sludge formation.

In a diesel engine operating under high thermal loads, an efficient oil cooler supports maintaining optimal engine performance parameters and improves the system's resistance to long-term operation on the road and in city traffic.

Technical characteristics and compatibility

The presented cooler belongs to the Oil coolers and lines group, meaning it is a specialized component for the engine oil circuit, not a universal heat exchanger. The product is intended for a diesel unit, so its design is adapted to the characteristics of a diesel engine, including higher thermal loads and longer duty cycles under constant load.

As an Audi brand part, the cooler has been designed to maintain factory mounting points and compatibility with the oil and cooling line system. This facilitates installation in place of the factory component, without the need for system modifications or the use of additional adapters.

Component condition and installation aspects

The offered oil cooler is a used component, which in practice means the possibility of an economical repair of the lubrication system while maintaining the original Audi design. Before installation, standard workshop procedures are recommended, including:

• checking the system for leaks after installation,
• replacing seals in accordance with service recommendations,
• flushing the oil system in case of previous failure of the old cooler,
• verifying the correct connection of oil lines and, if applicable, coolant lines.

This approach allows for fully utilizing the potential of the part and reducing the risk of secondary faults associated with improper installation.

Benefits of using an original Audi oil cooler

Using an oil cooler dedicated to the Audi A8L D4 3.0 TDI CBTA provides a number of practical operational benefits:

• Stable oil temperature – support for smooth diesel engine operation across a wide range of loads.
• Better engine protection – reducing the risk of oil overheating and accelerated wear of mating components.
• Maintaining factory performance characteristics – no need for adaptation, compatibility with the line system and engine design.
• Possibility of economical repair – a used component allows for lower service costs while maintaining original specifications.

For users who drive on the highway, at higher speeds, or with frequent loads, an efficient oil cooler is an important element of prevention against costly engine repairs.

Related cooling system components and additional information

When replacing the oil cooler, it is worth paying attention to the general condition of the engine cooling system, including channel patency, coolant quality, and the condition of other heat exchangers. An extended discussion on the impact of the cooling system on engine longevity can be found in the article: Engine cooling system – overheating, repair, and used radiators.

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