Audi A4 B8 Turbocharger Turbo Upper Cover Plate 2.0 TDI Diesel 04L253019A

Audi A4 B8 Turbocharger Turbo Upper Cover Plate 2.0 TDI Diesel is an original component from the Turbochargers and parts group, designed for 2.0 TDI diesel engines. It serves as a precisely fitted cover for the upper part of the turbine, supporting the stable operation of the turbocharging system and maintaining factory mounting geometry.

Specifications and technical data

• SKU: 04L253019A-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 04L253019A
• Substitutable numbers: 04L253019A, 04L 253 019 A, 04L 253 020 N, 04L253020N, 04L 253 019 AX, 04L253019AX
• Fuel type: Diesel
• Part type: Turbocharger Cartridge
• Category: Turbos & Parts

Purpose and function of the component

The upper turbocharger cover in the Audi A4 B8 is responsible for shielding the sensitive area of the turbine, which helps maintain proper operating conditions for the turbocharging system. A correctly selected cover limits the impact of contaminants from the engine bay, stabilizes the position of adjacent components, and facilitates future turbine servicing.

The component has been designed specifically for 2.0 TDI Diesel engines, ensuring compatibility with factory mounting points as well as the routing of lines and accessories. This solution is particularly important during repairs following a turbine failure or when reassembling the system after disassembly.

Benefits of using an original cover

Using an original upper turbocharger cover helps maintain the structural integrity of the entire turbocharging system. Proper fitment minimizes stress on adjacent parts, which promotes smooth turbine operation and reduces the risk of unwanted vibrations. This is especially important in modern diesel units, where assembly precision translates into engine refinement.

A used OEM component is also a favorable compromise between quality and cost – you retain factory fitment and material quality while optimizing your repair budget. In the case of turbocharging systems, this is significant not only economically but also technically, as non-factory replacements may differ in construction details.

Condition, installation, and fitment

The cover comes from disassembly, meaning it is a used part that is still intended for further use after proper installation. Thanks to the preservation of the original mounting geometry, it can be quickly fitted to the turbine and accessories in an Audi A4 B8 with a diesel engine, without the need for modifications or adaptations.

During installation, it is recommended to pay attention to the correct positioning of the cover relative to the turbine housing and to check the condition of the fasteners. A correctly installed cover supports the stability of the entire system, which is important for both the durability of the turbine and the comfort of vehicle use.

Audi Turbochargers and parts – expansion and service

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 turbocharger housings, manifolds, or additional covers, check the available parts in the Audi Turbochargers and parts category.

Knowledge about used parts and retrofitting

When selecting used components for premium-class cars, it is worth knowing the specifics of original components and their impact on vehicle durability. A broader context on the use of original parts from disassembly in premium segment cars can be found in the article Mercedes – comfort, prestige, and durability. Why is it worth choosing original used parts?, which discusses the approach to quality and cost-effectiveness of such solutions.

If you are also interested in the topic of retrofitting VAG group cars with elements from higher equipment versions, it is worth reading the guide Retrofitting in VAG and BMW group cars: How to cheaply upgrade your car using used parts from higher versions?, which shows how to consciously plan modifications using original used components.