Audi VW Seat Skoda 2.0 TDI Diesel Oil Filter Housing Box Cover 03L115389C

Audi VW Seat Skoda 2.0 TDI Diesel Oil Filter Housing Box Cover is an original VAG group component designed for 2.0 TDI diesel engines. The robust construction of the housing ensures stable mounting of the filter cartridge and proper oil flow within the lubrication system, which translates into safe engine operation and reduced risk of leaks.

Specifications and technical data

• SKU: 03L115389C-2
• Mark: Audi
• Condition: Used
• OEM Part Number: 03L115389C
• Substitutable numbers: 03L115389C, 03L 115 389 C
• Fuel type: Diesel
• Part type: Oil Filter
• Category: Oil Filters

Purpose and function in the lubrication system

The oil filter housing in a diesel engine plays a key role in maintaining proper oil pressure and ensuring the sealed flow of the lubricating medium between the pump, the filter, and the oil channels in the engine block. In 2.0 TDI units, it is responsible for, among other things:

• stable seating of the oil filter cartridge in the correct operating position,
• sealing the oil flow between the filtering section and the engine supply channels,
• maintaining proper flow geometry, which limits pressure drops,
• safe drainage of contaminants trapped by the filter cartridge. A properly selected oil filter housing for a 2.0 TDI engine is essential for the stable operation of the lubrication system, especially in diesel units operating under higher thermal and mechanical loads.

Benefits of using an original oil filter housing

Using an original VAG group housing in a 2.0 TDI engine allows for maintaining factory oil flow parameters and compatibility with engine accessories. In practice, this means:

• secure fitment with the engine block and other lubrication system components,
• preservation of the factory geometry of the oil channels within the housing,
• reduced risk of leaks in the oil filter area,
• easier periodic maintenance – predictable removal and installation of the filter cartridge. For owners of VAG group vehicles, choosing such a housing is a compromise between technical correctness of the solution and reasonable vehicle maintenance costs.

Product characteristics and use in Diesel engines

The presented oil filter housing has been designed to work with compression-ignition engines, which is significant given the higher operating pressures and greater requirements regarding lubrication quality. In Diesel units, the oil system must effectively dissipate heat and contaminants generated at higher compression ratios, which is why a properly selected filter housing:

• supports the maintenance of stable oil pressure across the entire RPM range,
• limits the risk of cavitation and local pressure drops in the filter area,
• ensures repeatable operating conditions for the filter cartridge. This solution is particularly important in cars operated in mixed cycles, where the engine often works under varying load and temperature conditions.

Condition, selection, and installation aspects

The oil filter housing comes from dismantling, which allows for an economical replacement of the component while maintaining the manufacturer's original specifications. When choosing such a component, it is worth paying attention to:

• compatibility with the 2.0 TDI engine type in a given vehicle model,
• condition of the sealing surfaces and mounting sockets,
• absence of mechanical damage in the area of oil connections. During installation, it is recommended to use new seals and follow the vehicle manufacturer's service procedures, which promotes trouble-free operation after replacement. 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 oil filter cartridges, filter bases, or mounting elements, check the available parts in the Audi oil filters category.

Operation, overheating, and impact on engine durability

An efficient lubrication system working with a properly selected oil filter housing has a direct impact on the engine's operating temperature and protection against excessive wear. It is worth remembering that improper filtration and oil pressure drops can accelerate the degradation of components working with the cooling and lubrication system. You can find more about the relationships between engine operating temperature, the cooling system, and oil circulation in the article Engine cooling system – overheating, repair, and used radiators, which helps to better understand the impact of these sub-assemblies on engine lifespan.