Audi RS4 B8 Engine Timing Chain Cover Housing Left N/S 4.2 FSI CFSA 07L109285AB

Audi RS4 B8 Engine Timing Chain Cover Housing Left N/S 4.2 FSI CFSA is an original component from the Timing chain and belt covers group, designed for precise protection of the timing system in the 4.2 FSI unit. The carefully designed left cover ensures stable seating and effective protection of critical engine components against contamination and mechanical damage. This technical solution helps maintain proper timing operation and ensures a high level of engine reliability.

Specifications and technical data

• SKU: 07L109285K
• Mark: Audi
• Condition: Used
• OEM Part Number: 07L109285K
• Substitutable numbers: 07L109285AB, 07L 109 285 AB, 07L109285K, 07L 109 285 K
• Location on the vehicle: Left
• Part type: Timing Cover
• Category: Timing Covers

Purpose and technical function

The presented timing cover has been developed for the 4.2 FSI CFSA engine in the Audi RS4 B8 model, where it is responsible for covering the timing chain or belt system components on the left side of the unit. Its task is to maintain appropriate operating conditions for the timing mechanism, limit the influence of external factors, and support proper maintenance procedures in the timing drive area. Thanks to its factory design and fitment for the specific engine configuration, the cover ensures proper alignment with adjacent components, which helps maintain the tightness and stability of the entire system. This is particularly important in high-revving units, where assembly precision and the correct geometry of the covers have a direct impact on component durability.

Construction, fitment, and installation

The housing is designed as a dedicated left-side component, which facilitates correct orientation during installation and eliminates the risk of improper seating. The construction provides appropriate mounting points and a shape matched to the geometry of the 4.2 FSI CFSA engine, allowing for installation in place of the factory cover without the need to modify other sub-assemblies. As a part from the Timing chain and belt covers group, this element works with other covers and guides, creating a coherent protective system for the entire timing drive. Proper alignment and structural rigidity promote stable system operation while facilitating service access during inspections and repairs.

Characteristics of the used component

The timing cover is offered as a used part, which allows for economical repair or replacement of a missing element while maintaining the manufacturer's original specifications. This type of solution is particularly beneficial when servicing specialized units where structural compliance and the preservation of factory assembly parameters are essential. Choosing an original, used timing cover for the Audi RS4 B8 allows for cost reduction compared to new components, while maintaining proper fitment for the 4.2 FSI CFSA engine. It is a practical solution for workshops and users who expect compatibility with the factory system and a predictable installation process.

Benefits of using an original timing cover

• Factory fitment – a component designed specifically for the 4.2 FSI CFSA unit in the Audi RS4 B8, which facilitates installation and ensures proper alignment.
• Timing system protection – effective covering of timing chains or belts and cooperating components against contamination and damage.
• Consistency with other covers – construction compliant with other elements from the Timing chain and belt covers group, which promotes stable operation of the entire system.
• Reasonable service costs – using a used part allows for optimizing the repair budget while maintaining the original specification.

Related components and service knowledge

If you are planning a comprehensive repair or upgrade of your Audi's engine area and need other elements from the same group, such as additional covers, internal shields, or side protective elements, check the available parts in the Audi timing chain and belt covers category. When working on timing systems, it is worth expanding your knowledge about typical signs of wear and approaches to repairing timing drive systems. Practical information on diagnostics, costs, and principles of selecting original and used components can be found in the article BMW N47 timing chain – typical failure and repair using original BMW parts, which discusses universal issues also useful when servicing other units. If you are interested in a broader approach to optimizing repair costs while maintaining appropriate quality, it is also worth reading the guide on how to repair a car using used auto parts, where practical aspects of component selection and service planning are discussed.