Mercedes W220 Exhaust Manifold Cylinders 5-8 5.5 Petrol 113986 A1131400109

Mercedes W220 Exhaust Manifold Cylinders 5-8 5.5 Petrol is a factory exhaust system component designed for V8 petrol engines, responsible for the efficient discharge of exhaust gases from cylinders 5–8. Thanks to a design tailored to the Mercedes power unit, it ensures stable engine operating conditions, correct exhaust flow characteristics, and secure mounting in the engine bay. This solution is particularly beneficial for exhaust system repairs when you want to maintain original geometry and compatibility.

Specifications and technical data

• SKU: A1131400109
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1131400109
• Substitutable numbers: A1131400109, A 113 140 01 09
• Fuel type: Petrol
• Part type: Exhaust Manifold
• Category: Manifolds & Headers

Purpose and function in the exhaust system

The presented exhaust manifold is an item in the Exhaust manifolds category, designed to work with the 5.5 petrol engine in the Mercedes W220 model. It is responsible for collecting exhaust gases from cylinders 5–8 and directing them to the remaining components of the system, which is important for uniform cylinder scavenging, stable engine operation, and proper backpressure formation. A well-chosen manifold in this area influences:

• correct synchronization of exhaust flow between cylinders,
• maintenance of the appropriate temperature in the cylinder head zone,
• reduction of unwanted stresses in the exhaust system.

Benefits of using an original Mercedes manifold

Using an original manifold in a Mercedes W220 allows you to maintain the factory operating characteristics of the V8 engine. The channel geometry and mounting points are matched to the cylinder head and other system components, which facilitates installation and minimizes the risk of leaks. This is particularly important for petrol units, where uniform exhaust discharge affects engine refinement, throttle response, and thermal load. A used component of this type is a good choice for maintenance repairs when you want to preserve the original design without the need for adaptations or modifications.

Condition, verification, and fitment

The manifold comes from dismantling and is offered as a used part, which allows for economical repair while maintaining a component of factory origin. Before installation, it is recommended to perform a standard inspection of the mating surfaces, threads, and any accessory mounting points to ensure tightness and proper tightening to the cylinder head. To ensure full compatibility with your vehicle, it is worth comparing the engine configuration, model year, and equipment version. The product has assigned catalog numbers and interchangeable numbers, which facilitates clear identification in service catalogs and parts selection systems.

Application in 5.5 petrol engines

The exhaust system in a 5.5 V8 petrol engine operates at high temperatures and under significant load, which is why a properly selected exhaust manifold is important for both durability and engine performance. The correct design of the exhaust channels promotes uniform scavenging of cylinders 5–8, which reduces the risk of local overheating and supports stable operation at higher RPMs. In the case of upgrading or repairing the exhaust system in a Mercedes with a petrol engine, it is worth paying attention to the consistency of the components used – from the manifold, through the further sections of the system, to the final mufflers. If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as additional manifolds, connecting sections, or mounting elements, check the available parts in the Mercedes Exhaust manifolds category.

More about used exhaust manifolds

When selecting a used manifold for a Mercedes, it is worth knowing the differences between individual design solutions and typical signs of wear. If you want to better understand the impact of the manifold on engine operation, exhaust flow characteristics, and potential modifications, check out the article Performance exhaust system: used manifolds and sports catalytic converters on the road, where you will find practical tips on choosing and operating such components.