Audi RS4 B8 RS5 8T Oil Cooler Line Thermostat 4.2 FSI 079115201C

Audi RS4 B8 RS5 8T Oil Cooler Line Thermostat 4.2 FSI is an original component from the Thermostats and housings group, designed for the oil cooling system in high-performance 4.2 FSI engines. It ensures control over oil flow through the cooler, which translates into stable engine operating temperatures and consistent performance under demanding conditions.

Specifications and technical data

• SKU: 079115201C
• Mark: Audi
• Condition: Used
• OEM Part Number: 079115201C
• Substitutable numbers: 079115201C, 079 115 201 C
• Part type: Thermostat Housing
• Category: Thermostats & Housings

Purpose and function in the oil cooling system

The oil cooler line thermostat in RS4 B8 and RS5 8T models is responsible for controlling the oil circulation between the engine and the oil cooler. In practice, this means that:

• at lower temperatures, it restricts flow through the cooler, accelerating the time it takes for the oil to reach operating temperature,
• once the engine is warmed up, it directs oil through the cooler, stabilizing the operating conditions of the 4.2 FSI unit,
• it supports the maintenance of proper oil viscosity, which is crucial for the lubrication and durability of moving parts. For powerful naturally aspirated engines like the 4.2 FSI, a properly functioning oil cooler line thermostat is essential for consistent performance and protecting the powertrain during dynamic driving.

Technical characteristics and advantages of using OE parts

The presented thermostat comes from the Audi range, which means it maintains factory geometry, mounting points, and opening characteristics. As a result:

• it fits original oil cooling system lines and housings without the need for modifications,
• it maintains operating parameters in accordance with the 4.2 FSI engine manufacturer's specifications,
• it reduces the risk of leaks resulting from poorly fitted aftermarket replacements. Choosing an OE component is particularly important in high-power vehicles, where the lubrication and oil cooling system operates under increased thermal loads.

Product condition and service application

The offered oil cooler line thermostat is an aftermarket part, which allows for an economical repair of the oil cooling system while maintaining the original specification. This type of part is suitable for situations where:

• the existing thermostat shows signs of sticking or improper opening,
• overheating or temperature fluctuations have occurred in the oil cooling system,
• service work is being performed on the 4.2 FSI engine and preventative replacement of oil flow control components is recommended. Using an original thermostat helps maintain the integrity of the entire system, which is beneficial for both engine durability and subsequent diagnostics.

Integration with the Audi Thermostats and housings system

The oil cooler line thermostat belongs to the Thermostats and housings group, which includes components responsible for managing fluid and oil temperatures in the vehicle. In practice, it works with other components in this group, such as coolant thermostat housings, connectors, or additional flow control valves. If you are planning a comprehensive repair or upgrade of your Audi's engine area and need other items from the same group, such as thermostat housings, connection pipes, or additional flow control modules, check out the available parts in the Audi Thermostats and housings category.

Technical support and knowledge about Audi powertrains

When working with cooling and lubrication systems in high-power vehicles, it is worth using reliable sources of knowledge regarding the specifics of solutions used by manufacturers. If you are interested in a broader context of powertrain construction and the cooperation of elements such as thermostats, radiators, or drivetrain systems in all-wheel-drive cars, take a look at the article xDrive, 4Matic, quattro or 4Motion – a comparison of AWD systems from BMW, Mercedes, Audi, and VW, where typical components and service approaches for premium class cars are discussed.

Summary

Audi RS4 B8 RS5 8T Oil Cooler Line Thermostat 4.2 FSI is a factory component from the Thermostats and housings group, designed for precise control of oil flow through the cooler in 4.2 FSI engines. Using an original part allows you to maintain the oil cooling system parameters designed by the manufacturer, which is important for the durability of the powertrain and performance stability during both daily and dynamic use.