Audi A4 B8 2.0 TDI CAGA Oil Filter Housing 045115389H

Audi A4 B8 2.0 TDI CAGA Oil Filter Housing 045115389H is an original component from the Oil filters group, designed for the lubrication system of the 2.0 TDI CAGA diesel engine. It ensures stable seating of the filter cartridge and leak-proof oil flow, which translates into safe engine operation and predictable system pressure.

Specifications and technical data

• SKU: 045115389H
• Mark: Audi
• Condition: Used
• OEM Part Number: 045115389H
• Substitutable numbers: 045115389H, 045 115 389 H
• Category: Oil Filters

Purpose and function in the lubrication system

The oil filter housing in the Audi A4 B8 2.0 TDI CAGA is responsible for precisely guiding the oil stream through the filter cartridge and maintaining the tightness of the entire module. A correctly selected housing minimizes the risk of pressure drops, leaks, and oil contamination, which has a direct impact on the durability of the power unit and cooperating components, such as the turbocharger or the timing system.

Using an original housing from the Oil filters group allows for maintaining factory flow parameters and lubrication system performance characteristics, which is particularly important during operation in both city and highway conditions.

Construction and advantages of the original housing

The Audi oil filter housing has been designed as a component geometrically matched to the 2.0 TDI CAGA unit, taking into account the layout of oil channels and mounting points. As a result, installation is predictable, without the need for modifications or the use of additional adapters.

• stable mounting of the filter cartridge, reducing the risk of it shifting during engine operation,
• factory-designed oil flow channels, supporting uniform lubrication of the unit,
• compatibility with the lubrication system intended for the 2.0 TDI CAGA engine.

By using an original housing, you can maintain the consistency of the entire lubrication system with the manufacturer's specifications, which is important for long-term vehicle operation.

Component condition and service application

The presented oil filter housing is a secondary market component, which allows for an economical repair of the lubrication system while maintaining the original design. This type of part is particularly suitable in situations where the existing housing has suffered mechanical damage, deformation, or there are problems with maintaining connection tightness.

Replacing the housing is recommended, among other things, after detecting leaks in the filter area, thread damage, or body cracks. Using an original solution helps reduce the risk of improper fitment and recurring leaks after service.

Technical support and part selection

The oil filter housing is linked to a specific OEM part number and has interchangeable numbers, which facilitates its identification and selection based on service documentation. When planning a repair, it is worth verifying the compatibility of the component with the specific 2.0 TDI CAGA engine version to avoid installation problems.

For users who want to deepen their knowledge about the impact of auxiliary systems on the durability of the power unit, an article describing the relationship between operating temperature and engine life may be useful – details can be found in the material Engine cooling system – overheating, repair, and used radiators.

Service expansion within the Audi lubrication system

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as filter cartridges, gaskets, or oil module bodies, check the available parts in the Audi oil filters category.

For larger service works, including the power unit or transmission, it is worth considering the use of secondary market components – this issue has been discussed in more detail in the guide Why it is worth buying used transmissions and engines – facts instead of myths, which organizes the most important technical and economic issues related to used subassemblies.