Mercedes W166 W204 W212 W221 W251 Air Inlet Intake Manifold A2761403001

Mercedes W166 W204 W212 W221 W251 Air Inlet Intake Manifold is an original component from the Intake manifolds group, designed for use in selected Mercedes models with petrol engines. This used sub-assembly ensures factory-standard intake runner geometry, which promotes stable engine operation and predictable cylinder filling parameters. It is a solution for users who expect a design consistent with the manufacturer's specifications while maintaining reasonable service costs.

Specifications and technical data

• SKU: A2761403001
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2761403001
• Substitutable numbers: A2761403001, A 276 140 30 01
• Category: Intake Manifolds

Purpose and compatibility

The presented air intake manifold has been designed for Mercedes SUV, sedan, and estate platforms, such as the W166, W204, W212, W221, and W251. This ensures a perfect fit for the engine bay architecture, mounting points, and intake runner layout characteristic of these vehicle generations. Using an original solution allows for maintaining compatibility with the factory engine management system and associated equipment.

Construction and function of the intake manifold

The manifold belongs to the group of components responsible for directing air from the intake system to individual cylinders. Properly shaped runners influence uniform filling, which translates into engine refinement, throttle response, and idle speed stability. The manifold design in this Mercedes model is optimized for flow to reduce pressure losses and support combustion efficiency.

By maintaining the original geometry, installing this component allows for restoring engine performance parameters to the level intended by the manufacturer. This is particularly important for vehicles where previous modifications or wear of intake components have caused a drop in performance or unstable operation.

Benefits of using an original Mercedes manifold

Using an original intake manifold instead of a worn or damaged component brings a number of practical benefits:

• preservation of factory cylinder filling characteristics and predictable load response,
• consistency with the stock engine control unit software,
• proper fitment to existing mounts, hoses, and accessories,
• reduced risk of leaks in the intake system.

For workshops and users, this means easier installation, fewer potential problem areas, and greater confidence that the intake system will operate in a stable manner. Choosing an original element from the Intake manifolds group is also beneficial from the perspective of subsequent diagnostics – engine operating parameters remain consistent with the manufacturer's reference data.

Characteristics of the used component

The offered air intake manifold is a used part, which allows for a significant reduction in repair costs compared to purchasing a new component. At the same time, the original Mercedes design is preserved, without the compromises typical of many aftermarket replacements. It is a sensible choice for vehicles used on a daily basis, where a balance between functionality and service budget control is key.

Before installation, a standard workshop procedure is recommended: checking for leaks, the condition of connection ports, and the mating surfaces to the cylinder head. A properly installed manifold ensures stable airflow and supports even operation of all cylinders, which is important for both performance and fuel consumption.

Technical support and additional information

For users interested in a broader context of intake and exhaust system operation in premium vehicles, including Mercedes, a guide on selecting and operating used components may be useful. More practical tips can be found in the article: Performance exhaust system: used manifolds and sports catalytic converters on the road.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as intake manifolds, intake duct elements, or air distribution components, check the available parts in the Mercedes Intake manifolds category.

When considering the purchase of a used manifold versus a new aftermarket replacement, it is worth analyzing the differences in costs and durability. This topic is discussed in more detail in the guide: Car parts – new or used? We compare costs, quality, and durability, which can help in making an informed service decision.