Audi A3 8P TT 8J A4 B7 Oil Cooler 1.8 2.0 TFSI Petrol Engine 06J117021J

Audi A3 8P TT 8J A4 B7 Oil Cooler 1.8 2.0 TFSI Petrol Engine is a factory-made lubrication system component designed to work with TFSI petrol engines. This used oil cooler ensures stable operating conditions for the powertrain, helping to maintain the proper oil temperature under demanding road conditions. This solution is intended for users who expect a proven OEM design and correct integration with the factory cooling system.

Specifications and technical data

• SKU: 06J117021J
• Mark: Audi
• Condition: Used
• OEM Part Number: 06J117021J
• Substitutable numbers: 06J117021J, 06J 117 021 J
• Fuel type: Petrol
• Category: Engine Oil Coolers & Lines

Purpose and function in the TFSI petrol engine

The presented oil cooler is a component from the Oil coolers and lines group, dedicated to petrol engines, including the 1.8 and 2.0 TFSI units used in Audi A3 8P, TT 8J, and A4 B7 models. Its task is to effectively dissipate heat from the engine oil, which reduces the risk of overheating, loss of viscosity, and accelerated wear of components working in the crank-piston system.

Stable oil temperature is crucial for:

• maintaining a proper lubricating film on friction surfaces,
• reducing friction and noise during engine operation,
• increasing the engine's resistance to long-term thermal loads,
• limiting the risk of carbon deposits and contamination in the lubrication system.

Construction and integration with the cooling system

The oil cooler in this solution works with the engine cooling system, using the coolant medium to absorb heat from the oil. Thanks to the design specified by the vehicle manufacturer, the correct geometry of connections and compatibility with factory lines and mounts are maintained. This allows for proper oil and coolant flow without the need for system modifications.

A properly selected oil cooler:

• supports even temperature distribution throughout the lubrication system,
• ensures predictable engine behavior in both city and highway conditions,
• facilitates maintaining operating parameters in accordance with the manufacturer's specifications.

Condition, selection, and practical application

The item is offered as a used original part, which in practice means maintaining the factory geometry, mounting points, and flow characteristics. When selecting an oil cooler for an Audi with a TFSI petrol engine, it is crucial to match it to the specific version of the power unit and the cooling system configuration; therefore, it is worth verifying compatibility with your vehicle model before installation.

Replacing the oil cooler is particularly recommended in situations where:

• there are symptoms of oil overheating or a drop in lubrication pressure,
• leaks are found on the housing or connections,
• there are signs of oil mixing with coolant in the heat exchanger area.

Engine safety and technical knowledge

A functional oil cooler has a direct impact on the longevity of a petrol engine, especially in turbocharged units such as the TFSI. Maintaining a stable oil temperature reduces the risk of damage to bearings, turbocharging, and other pressure-lubricated components. For users who want to better understand the relationship between the cooling system and engine durability, the following guide will be helpful: Engine cooling system – overheating, repair, and used coolers.

System expansion within the same parts group

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.