Intake Manifold Mercedes W202 W210 R170 M111 Petrol Engine Inlet A1111402201

Intake Manifold Mercedes W202 W210 R170 M111 Petrol Engine Inlet is an original air supply system component designed for installation in M111 series petrol engines. Thanks to its factory-spec channel geometry and precise fitment to the cylinder head, it ensures stable cylinder filling conditions, which translates into smooth engine operation and predictable torque characteristics. This is a solution for users who want to maintain consistent engine performance parameters in line with the manufacturer's factory specifications and uphold the proper operating standards of the M111 unit.

Specifications and technical data

• SKU: A1111402201
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1111402201
• Substitutable numbers: A1111402201, A 111 140 22 01
• Location on the vehicle: Front
• Fuel type: Petrol
• Category: Intake Manifolds

Purpose and role of the intake manifold

The intake manifold in the M111 engine is responsible for the even distribution of air to all cylinders, flow stabilization, and cooperation with the engine management equipment. For Mercedes W202, W210, and R170 models, a correctly selected manifold is essential for:

• maintaining the proper fuel-air mixture ratio in the petrol engine,
• ensuring even cylinder filling under various loads,
• proper cooperation with the engine control system and equipment at the front of the engine bay,
• preserving factory performance characteristics and fuel consumption levels.

Thanks to a design tailored to the architecture of the M111 unit, the intake manifold helps reduce pressure drops in the intake system and supports stable operation at idle and under partial load.

Compatibility with Mercedes models and petrol systems

The presented item belongs to the Intake Manifolds group and is intended for installation in the front part of the engine bay, in the air intake area. It has been designed to work with the M111 petrol engine used in popular Mercedes C-Class (W202), E-Class (W210), and R170 roadster models. This design compatibility means:

• preservation of factory intake channel geometry for the M111 unit,
• correct positioning relative to the cylinder head and equipment at the front of the vehicle,
• consistency with the fuel supply system and engine management in petrol versions.

For users looking to restore the proper operation of the intake system after damage or wear of the previous component, using an original manifold from the same design group is crucial to avoid issues with starting, idle fluctuations, or loss of dynamics.

Performance characteristics and benefits of using an original manifold

The original intake manifold for the M111 engine has been designed for stable operation across a wide rev range, typical of Mercedes petrol units. In practice, its use allows for:

• maintaining predictable throttle response throughout the entire RPM range,
• reducing the risk of leaks in the intake system that could disrupt the mixture composition,
• maintaining compatibility with factory mounting points and equipment at the front of the engine,
• easier diagnostics and future servicing due to compliance with manufacturer documentation.

A used OEM component is a sensible choice for drivers who want to combine repair cost control with maintaining the original engine operating characteristics and proper cooperation with the control system.

Installation area and service aspects

The intake manifold in the M111 unit is mounted in the front part of the powertrain, in the area of the engine bay responsible for supplying air to the cylinders. When planning a replacement, it is worth paying attention to:

• the condition of the contact surface with the cylinder head and sealing elements,
• correct routing of hoses and equipment cooperating with the manifold,
• adherence to the installation sequence in accordance with service procedures for the M111 engine.

Professional installation allows for fully utilizing the potential of the manifold design and limiting the risk of subsequent leaks or errors in the engine's operation.

Related products and technical knowledge

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 additional manifolds, intake elements, or components cooperating with the air supply system, check out the available parts in the Mercedes Intake Manifolds category.

If you are interested in a broader context of how the exhaust and intake systems work and want to better understand the impact of manifolds on engine performance, take a look at the article Performance exhaust system: used manifolds and sports catalytic converters on the road, where you will find practical tips on selecting used manifolds for various brands.

To learn more about the benefits of using original, used components instead of replacements of uncertain origin, it is also worth reading the material Quality assurance and OEM safety – why are used original car parts the best choice for your car?, which discusses issues of quality, safety, and cost-effectiveness of such solutions.