Mercedes-Benz C-Class W202 W203 M111 Petrol Inlet Intake Manifold A1111412001

Mercedes-Benz C-Class W202 W203 M111 Petrol Inlet Intake Manifold is a factory-original intake system component designed for M111 series petrol engines, mounted in the front part of the engine bay. It is responsible for the precise distribution of the air-fuel mixture to the cylinders, which translates into stable engine operation and predictable performance. By maintaining the original manifold geometry, it provides a solid foundation for both standard daily use and further modifications.

Specifications and technical data

• SKU: A1111412001
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1111412001
• Substitutable numbers: A1111412001, A 111 141 20 01, BG
• Location on the vehicle: Front
• Fuel type: Petrol
• Category: Intake Manifolds

Technical characteristics of the intake manifold

The presented manifold belongs to the Intake Manifolds category and was designed specifically for M111 petrol units used in Mercedes C-Class and E-Class models of the W202, W203, and W210 generations. The manifold design is optimized for uniform cylinder filling, which helps maintain stable idle speed, proper throttle response, and predictable fuel consumption.

Its placement in the front part of the engine bay facilitates service access, removal, and reinstallation, which is essential during repair work or when replacing auxiliary components. The manifold works with the petrol supply system, ensuring proper airflow within the typical load ranges for these engines.

Purpose and application in Mercedes vehicles

The Mercedes-Benz C-Class W202 W203 M111 Petrol Inlet Intake Manifold is the right choice when replacing a worn or damaged intake system component. The original design ensures compatibility with factory mounts, sensors, and other engine auxiliary components, which reduces the risk of fitment issues and leaks.

Using a manifold that meets the manufacturer's requirements helps maintain correct engine operating parameters, including uniform cylinder filling and stable pressure in the intake system. This is particularly important in petrol engines, where the quality of the mixture and airflow has a direct impact on engine refinement, exhaust emissions, and durability.

Condition, verification, and installation aspects

The offered item is used, meaning it has been removed from a vehicle but retains the functionality required for further use. This type of part allows for an economical repair of the intake system while maintaining the manufacturer's original specifications. Before installation, a standard inspection for leaks, channel cleanliness, and the condition of mating surfaces is recommended.

Due to its factory origin, the manifold is adapted for installation in the front zone of the engine bay without the need for vehicle structural modifications. In practice, this translates to predictable workshop labor time and a reduction in the risk of unplanned alterations. Proper installation, using appropriate gaskets and tightening torques, allows for the restoration of correct intake system operation in the M111 petrol engine.

Benefits of using an original intake manifold

Choosing an original intake manifold for a Mercedes ensures consistency with the factory engine characteristics, which is important for both daily operation and potential modifications. Maintaining the correct geometry of the intake channels promotes uniform cylinder filling, and thus stable engine operation across the entire rev range. For the user, this means predictable vehicle behavior, correct response to load, and the ability to perform further diagnostics based on factory parameters.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other parts from the same group, such as additional manifolds, intake elements, or components working with the fuel supply system, check the available parts in the Mercedes Intake Manifolds category.

More information about intake and exhaust systems

For drivers interested in a broader approach to modifying gas flow in the engine – from the intake and exhaust side – practical tips on selecting used manifolds and exhaust system components may be useful. In this context, it is worth reading an article describing the relationships between the manifold and the rest of the system, available here: Performance exhaust system: used manifolds and sports catalytic converters on the road.