Vauxhall Insignia A 2.0 CDTI Diesel Engine Exhaust Manifold 55565985

Vauxhall Insignia A 2.0 CDTI Diesel Engine Exhaust Manifold is a factory exhaust system component designed for diesel engines, ensuring proper exhaust gas discharge from the cylinder head. Thanks to its design compliant with the manufacturer's specifications and its fitment for the A20DTH unit, the manifold helps maintain stable engine operating parameters and reduce unwanted thermal stress. It is a practical solution for users looking for original exhaust flow geometry and correct installation in place of the factory component.

Specifications and technical data

• SKU: 55565985
• Mark: Vauxhall (Genuine OE)
• Condition: Used
• OEM Part Number: 55565985
• Substitutable numbers: 55565985
• Fuel type: Diesel
• Category: Manifolds & Headers

Purpose and function in the exhaust system

The presented exhaust manifold is dedicated to the 2.0 CDTI A20DTH unit in Opel Insignia A and Opel Astra models with a diesel engine. Its task is to collect exhaust gases from individual cylinders and direct them to the subsequent parts of the exhaust system, while maintaining appropriate backpressure and uniform thermal load. A correctly selected manifold helps reduce the risk of leaks, power loss, and excessive turbocharger load.

Construction, fitment, and technical parameters

The manifold belongs to the Exhaust Manifolds group of components, which means that its channel geometry, mounting points, and mating surfaces are designed for specific power units. Using a design consistent with the factory project allows for:

• maintaining proper exhaust gas flow in a diesel engine,
• stable cooperation with the turbocharger and the subsequent section of the exhaust system,
• proper sealing at the interface with the cylinder head and other components.

The element is intended for diesel-powered vehicles, which is significant due to higher thermal and pressure loads compared to gasoline units. The manifold construction is adapted to the operating characteristics of the 2.0 CDTI engine, which promotes maintaining a uniform temperature distribution and reduces the risk of deformation during long-term operation.

Product characteristics and condition

The offered exhaust manifold comes from the Vauxhall brand, which in practice means compliance with the solutions used factory-wide in the group's vehicles. The product is in used condition, making it a cost-effective alternative to new components while maintaining the original design and mounting points. This type of part is particularly useful for repairs where maintaining factory fitment to the cylinder head and turbocharger is crucial, without the need for system modifications.

Practical application and benefits of installation

Replacing a worn or damaged exhaust manifold with the presented component allows for reducing typical operational problems, such as exhaust leaks at the cylinder head, power loss, noise, or incorrect boost pressure values. Using the original design facilitates installation and shortens service time because the mounting points and channel shapes are consistent with the factory project. This is a particularly beneficial solution for users who want to restore the correct operating parameters of the 2.0 CDTI engine without experimenting with replacements of uncertain fitment.

Exhaust system expansion and additional materials

If you are planning a comprehensive repair or upgrade of the engine area in your Vauxhall and need other elements from the same group, such as additional manifolds, connection sections, or components working with the turbocharger, check the available parts in the Vauxhall Exhaust Manifolds category.

For users interested in a broader approach to exhaust system modifications and service, including the use of used manifolds in cars of various brands, an article describing the practical aspects of selecting and operating such elements may be helpful – you can find it here: Performance exhaust system: used manifolds and sports catalytic converters on the road.

If you want to better understand how the selection of used components affects the durability and economics of repairs in popular car models, it is also worth checking out our aftermarket guide: Best used car parts – a guide to the most frequently chosen original parts.