Mercedes W163 W220 W639 Inlet Intake Manifold 3.7 Petrol 112970 A1121402201

Mercedes W163 W220 W639 Inlet Intake Manifold 3.7 Petrol is an item from the Intake manifolds category, designed for petrol-powered engines in selected Mercedes models. This solution allows for the restoration of proper cylinder filling with the air-fuel mixture, stable engine operation, and correct response to load during daily use.

Specifications and technical data

• SKU: A1121402201
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1121402201
• Substitutable numbers: A1121402201, A 112 140 22 01, A 112 140 18 01, A1121401801, 70014601
• Fuel type: Petrol
• Part type: Intake Manifold
• Category: Intake Manifolds

Purpose and compatibility

The presented intake manifold has been designed for the 3.7 petrol engine used in selected Mercedes W163, W220, and W639 class models. The manifold's construction is adapted to the airflow characteristics of these units, which allows for maintaining proper engine operating parameters, including uniform cylinder filling and stable idle speed. Thanks to the use of original intake port geometry, the manifold works with the factory engine management system without the need for additional software modifications. This solution is particularly important for repairs where maintaining stock performance and engine refinement is a priority.

Technical and functional characteristics

The manifold belongs to the group of components responsible for the precise delivery of air to the cylinders in a petrol engine. Properly shaped intake ports influence:

• proper cylinder filling across the entire rev range,
• maintenance of a stable air-fuel mixture,
• consistent cooperation with the engine control system,
• reduction of power drops resulting from leaks or flow turbulence. A properly selected intake manifold is important for both dynamics and fuel consumption. In the case of 3.7 Mercedes petrol units, its technical condition translates into smooth operation under load and predictable throttle response.

Condition, installation, and service application

The offered item is in used condition, which allows for an economical repair of the intake system while maintaining the original design. This type of solution is particularly beneficial for older vehicle generations, where the priority is reasonable service costs while maintaining compatibility with factory components. The intake manifold is intended for installation in place of the factory component, using original mounting points and stock accessories. During replacement, it is recommended to check the tightness of connections, the condition of vacuum lines, and associated components to fully utilize the potential of the intake system.

Benefits of using an original intake manifold

Using a manifold from the Intake manifolds group dedicated to specific Mercedes petrol units allows for maintaining the integrity of the entire intake system. In practice, this means:

• preserving the factory engine operating characteristics,
• reducing the risk of issues with engine control unit adaptation,
• easier diagnostics in the future thanks to the use of stock solutions,
• the possibility of predictable operation in the long term. For workshops and private users, this means a more predictable repair result and a reduction in the risk of additional costs associated with fitting non-original solutions. If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other items from the same group, such as intake manifolds, intake port components, or intake housings, check the available parts in the Mercedes Intake manifolds category.