Intake Manifold Mercedes W169 W245 OM640 Diesel Air Intake Unit A6400901437

Intake Manifold Mercedes W169 W245 OM640 Diesel Air Intake Unit is an original air supply system component designed for OM640 diesel engines. This used manifold ensures stable operating conditions for the power unit, supporting uniform cylinder filling and proper operation of the accessories in the front part of the engine bay. Thanks to its factory design, it maintains correct flow geometry and secure fitment for the diesel unit.

Specifications and technical data

• SKU: A6400901437-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6400901437
• Substitutable numbers: A6400901437, A 640 090 14 37, A6401500594, A 640 150 05 94, BG
• Location on the vehicle: Front
• Fuel type: Diesel
• Category: Fuel Pumps & Sending Units

Purpose and function of the intake manifold

The intake manifold in the OM640 diesel engine is responsible for directing air into the cylinders as evenly and consistently as possible. A correctly selected component in this group has a direct impact on:

• stability of the power unit's operation across the full load range,
• proper combustion conditions for the mixture in the diesel engine,
• maintaining adequate airflow in the front part of the engine bay.

In the case of diesel units, it is particularly important to maintain the tightness and proper shape of the intake channels, which translates into repeatable diesel performance parameters and predictable response to load.

Construction and fitment to the engine system

The presented intake manifold has been designed specifically for the OM640 unit installed in Mercedes W169 and W245 models. The construction is adapted for installation in the front part of the vehicle, taking into account the layout of accessories and cable routing in the engine bay. As a result, the component works with the factory air supply system, maintaining:

• compatibility with original mounting points,
• correct routing of intake channels,
• appropriate rigidity of the entire intake section.

Such fitment reduces the risk of installation stress and facilitates service within the intake system and adjacent components.

Benefits of using an original intake manifold

Using an original intake manifold in the OM640 diesel engine allows you to maintain the parameters specified by the vehicle manufacturer. In practice, this means:

• maintaining factory airflow characteristics,
• better cooperation with other components of the supply system,
• reduced risk of leaks and incorrect installation.

Choosing a used, original component is often a reasonable compromise between cost and maintaining the integrity of the entire intake system, especially for vehicles used on a daily basis.

Installation zone and compatibility with the diesel unit

The intake manifold operates in the immediate vicinity of key engine components, which is why its design must be adapted to the conditions prevailing in the front part of the bay. In the case of a diesel unit, it is important that this component is properly prepared to work with the fuel supply system and the diesel engine control system. A correctly selected manifold helps maintain:

• stable thermal conditions in the intake area,
• correct positioning relative to the cylinder head and accessories,
• consistency with other components of the intake system.

Mercedes exhaust manifolds – system expansion and service

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, connection sections, or components working with the exhaust system, check the available parts in the Mercedes exhaust manifolds category.

Technical support and knowledge about the exhaust system

When planning work within the intake and exhaust system, it is worth expanding your knowledge about the relationships between these components. Practical tips on selecting used manifolds and cooperating elements can be found in the article Performance exhaust system: used manifolds and sports catalytic converters on the road, which discusses issues related to manifolds in popular brands, including Mercedes.

If you want to better understand why choosing original used components can be beneficial for the durability and comfort of your car's operation, read the guide Mercedes – comfort, prestige, and durability. Why is it worth choosing original used parts?, where you will find practical arguments in favor of such a solution.