Audi RS4 RS5 Oil Filter Housing 4.2 FSI V8 CFSA 079115401T

Audi RS4 RS5 Oil Filter Housing 4.2 FSI V8 CFSA is an original lubrication system component designed for the CFSA series V8 FSI petrol engines in high-performance RS models. Its robust construction ensures stable mounting of the oil filter cartridge and leak-proof routing of the lubricant, which is crucial for the durability of the powertrain. Thanks to its factory origin, the part maintains the correct geometry and fitment for the stock engine configuration.

Specifications and technical data

• SKU: 079115401T
• Mark: Audi
• Condition: Used
• OEM Part Number: 079115401T
• Substitutable numbers: 079115401T, 079 115 401 T
• Part type: Oil Filter
• Category: Oil Filters

Purpose and function in the lubrication system

The oil filter housing base in the 4.2 FSI V8 engine is responsible for stable filter seating and proper routing of oil channels between the engine block and the filter. In practice, this means:

• maintaining a seal in the oil filter area,
• ensuring the correct oil flow direction through the filter cartridge,
• reducing the risk of pressure drops resulting from leaks or body deformation. In V8 FSI units, which operate at high RPMs and under significant thermal load, a stable lubrication system is particularly important for protecting the bearings, camshafts, and timing chain components.

Benefits of using an original housing base

Using a factory oil filter housing base in an RS4/RS5 engine allows you to maintain the parameters specified by the manufacturer. Compared to aftermarket replacements, the original component provides:

• precise fitment with the engine block and seals,
• compatibility with the stock oil channel geometry,
• adequate body rigidity at high operating temperatures. For users who drive their cars dynamically, including on the track, this means more predictable lubrication system behavior and a lower risk of issues related to leaks or incorrect oil pressure.

Component condition and service application

The presented oil filter housing base comes from a group of used OEM components, which allows for cost-effective repairs while maintaining the original design specifications. This type of part is particularly useful in situations where:

• mechanical damage to the body has occurred (e.g., cracks, deformations),
• leaks are present in the oil filter area,
• replacement of the component is necessary following improper installation or interference with the lubrication system. When selecting used components for the oil system, it is worth considering both design compatibility and the actual condition of the part to maintain safe engine operating parameters.

Technical support and selection of used parts

If you are considering repairing your lubrication system using aftermarket parts and want to better understand when used components – such as filter housings, oil lines, or control modules – are a reasonable choice, the following guide will be helpful: Operational failures vs. costs: how to repair a car using used auto parts?. There, you will find practical tips regarding failure symptoms, component selection, and the scope of work for repairs related to, among other things, oil leaks.

Related items in the Audi Oil Filters category

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 oil filter cartridges, housing bodies, or seals in the filter area, check out the available parts in the Audi Oil Filters category.