Audi A1 GB Turbocharger Upper Cover 1.0 TSI DLAA Petrol Engine 05C145701B

Audi A1 GB Turbocharger Upper Cover 1.0 TSI DLAA Petrol Engine is a precision component from the Turbochargers and parts group, designed for the forced induction system in 1.0 TSI petrol engines. It is responsible for securely covering the upper part of the turbocharger, supporting the proper operation of the entire system and maintaining factory mounting geometry. This is a practical solution for users who want to restore proper sealing and the structural integrity of the accessories in their vehicle.

Specifications and technical data

• SKU: 05C145701B-1
• Mark: Seat
• Condition: Used
• OEM Part Number: 05C145701B
• Substitutable numbers: 05C145701B, 05C 145 701 B, 05C 145 704 A, 05C145704A
• Fuel type: Petrol
• Part type: Turbocharger
• Category: Turbos & Parts

Purpose and function in the forced induction system

The turbocharger upper cover in the 1.0 TSI engine plays an important structural role – it stabilizes the mounting area, protects sensitive components, and helps maintain proper airflow around the turbine housing. As a result, the forced induction system retains the rigidity designed by the manufacturer and predictable operating conditions, which promotes even loading of the turbocharger and reduces the risk of unwanted vibrations.

In TSI petrol engines, where system pressures and temperatures are relatively high, a properly selected upper cover helps maintain the consistency of the entire assembly, thereby supporting stable boost characteristics and repeatable engine performance.

Compatibility, identification, and brand

The element was designed as a part from the Seat group, which means it maintains factory mounting points and compatibility with the original forced induction system architecture. Thanks to this, the cover can be used as a replacement for the factory element in vehicles using a turbocharger design intended for the 1.0 TSI engine.

Part identification is based on the OEM number and available interchangeable numbers, which facilitates matching to a specific vehicle configuration. In practice, this means that a mechanic or service advisor can quickly verify compatibility with a given car, minimizing the risk of selecting the wrong component.

Technical characteristics and fuel type

The cover has been prepared for units powered by petrol fuel, where requirements regarding temperature resistance and operating conditions differ from diesel engines. The design of the element is adapted to the specifics of the turbocharger working with the 1.0 TSI engine, which promotes maintaining proper rigidity and fit to the turbine housing.

As a part from the Turbochargers and parts category, the upper cover works with other system elements – the turbine housing, intake pipes, and mounts – creating a cohesive assembly that can be safely serviced and diagnosed in workshop conditions.

Condition, service application, and advantages of the used element

The offered component is a used part, which makes it an attractive solution for users looking for a reasonable compromise between repair costs and maintaining the original specification. A used OEM element allows for maintaining the factory design of the forced induction system without the need to resort to unreliable replacements with unverified geometry.

In practice, such an upper cover will work well both for standard replacement of a damaged element and during broader service work in the engine accessory area – especially when the priority is to maintain the manufacturer's original design and proper fitment with existing components.

Support in selection and system expansion

If you are planning a comprehensive repair or upgrade of the engine area in your Seat and need other elements from the same group, such as housings, mounts, or additional turbocharger components, check the available parts in the Seat Turbochargers and parts category.

When selecting used OEM elements for forced induction systems, it is worth using procedures based on catalog numbers and manufacturer data. For a better understanding of how original used parts affect the durability and precision of powertrain systems, the article describing practices used in the premium segment may be helpful – this is discussed in detail in the entry BMW – sports performance and precision. How do original used parts extend the life of a Bavarian icon?. Additionally, if you are considering the difference between new and used components, it is worth reading the cost and quality analysis in the article New or used? A comparison of the costs and quality of car parts, which organizes the most important selection criteria.