Mercedes SLK R170 M111 Air Intake Hose Intercooler Charge Pipe Line A1111402112

Mercedes SLK R170 M111 Air Intake Hose Intercooler Charge Pipe Line is an air supply system component for gasoline engines, responsible for the stable and controlled delivery of air to the power unit. By maintaining the factory geometry and cross-sectional diameter, the hose supports the proper operation of the mass air flow sensor, fuel injection system, and engine control unit. It is a practical solution for users who want to restore correct engine performance without interfering with the original design.

Specifications and technical data

• SKU: A1111402112
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1111402112
• Substitutable numbers: A1111402112, A 111 140 21 12, A1111410604, A 111 141 06 04
• Fuel type: Petrol
• Category: Hoses, Lines & Pipes

Purpose and function in the intake system

The intake hose in the SLK R170 model with the M111 engine is responsible for the tight connection of intake system components, guiding air from the filter towards the manifold and engine accessories. The proper shape and flexibility of the hose limit the risk of leaks, false air intake, and power drops that may occur with damaged or non-factory replacements. Using an original solution helps maintain stable intake pressure and correct throttle response.

Benefits of using the original hose

Using an intake hose dedicated to the M111 unit in the Mercedes SLK R170 allows for maintaining the parameters specified by the vehicle manufacturer. In practice, this means:

• more predictable engine operation across the entire rev range,
• reduced risk of errors related to the air-fuel mixture,
• better compatibility with the factory ECU and accessories,
• maintenance of stock performance characteristics.

For users who value consistency of the air supply system and the stability of the gasoline engine, this is a technically safe and predictable solution.

Installation characteristics

The hose belongs to a group of components that, when properly selected, are installed directly without the need to modify other parts. The appropriate shaping and mounting points facilitate the seating of the hose in the engine bay, and the correct material stiffness helps maintain a stable position during engine operation. Replacing a worn or cracked hose with a structurally compliant part is one of the simplest ways to improve the refinement of the gasoline engine in this model.

Application in a gasoline engine

The intake system in gasoline units is particularly sensitive to leaks and changes in the cross-section of air channels. A properly selected intake hose helps maintain the right conditions for mixture formation, which translates into smooth idling, better load response, and stable combustion. In the case of the Mercedes SLK R170 with the M111 engine, using a hose with factory geometry is important both from the point of view of durability and the repeatability of the unit's operating parameters.

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 vacuum lines, flexible intake hoses, or breather pipes, check out the available parts in the Mercedes lines, hoses, and pipes category.

Additional information and technical inspiration

When working on the intake system and upgrading engine accessories, it is worth paying attention to the impact of hose condition on the engine's operating characteristics, especially in vehicles used dynamically. If you are interested in a broader context of using dismantled components for car modifications, check out the article Emotions and design – visual and mechanical tuning of a Seat using dismantled components, which shows how to consciously select used components while maintaining functionality and safety.