Mercedes-Benz A B W169 W245 OM640 Diesel Air Intake Manifold A6400901437

Mercedes-Benz A B W169 W245 OM640 Diesel Air Intake Manifold is an original air intake system component designed for installation in the front part of the engine bay. Thanks to its factory-spec design, it ensures stable cylinder filling conditions, which translates into proper engine operation and predictable combustion parameters in diesel engines.

Specifications and technical data

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

Purpose and function in the diesel supply system

The presented intake manifold has been designed specifically for Mercedes A-Class and B-Class models of the W169 and W245 generations with a diesel engine. Its task is to evenly distribute air to individual cylinders, which is crucial for engine refinement, exhaust emissions, and the durability of auxiliary components.

Its location in the front of the vehicle facilitates efficient routing of intake ducts and provides easier service access for diagnostics or replacement. The manifold's construction is optimized for the air flow characteristics typical of diesel engines, where stable boost conditions and cycle consistency are essential.

Benefits of using an original intake manifold

Using an original intake manifold in the air supply system provides a number of practical operational benefits:

• preservation of factory intake duct geometry, which supports proper cylinder filling,
• consistency with factory engine control unit maps, without the need for software adaptation,
• reduction of the risk of leaks in the intake area that affect diesel engine performance,
• easier diagnostics in case of potential air supply system issues.

For users who want to keep their vehicle in a configuration close to factory specifications, choosing this component is a technically safe and predictable solution for long-term operation.

Assembly characteristics and integration with the engine system

The intake manifold is designed to work within the diesel engine supply system, cooperating with other components such as the fuel injection system, turbocharging, or the exhaust gas recirculation system. Its location in the front of the vehicle promotes:

• clear routing of intake lines and connections,
• easier disassembly during service work in the engine bay,
• maintenance of proper intake system rigidity.

This element has been designed to work with a diesel engine, meaning its geometry and duct cross-sections are adapted to the specific loads and air flows occurring in diesel units.

Product condition and practical application

The offered intake manifold is a used part, making it an attractive solution for users looking for an economical yet original part for their Mercedes. This type of component is suitable both for standard replacement of a worn manifold and for repairs to the air supply system following a mechanical failure.

Choosing a used, original component allows for maintaining structural consistency with the rest of the system while reducing costs compared to new aftermarket replacements of unknown origin. This is a particularly beneficial solution for vehicles used intensively, where a reasonable balance between service costs and maintaining proper engine performance is important.

Integration with the fuel system and further upgrades

The intake manifold works in conjunction with fuel system components, such as the fuel pump or fuel level sensors, creating a cohesive system responsible for delivering the correct amount of air and fuel to the cylinders. If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other parts from the same group, such as various pump variants, power modules, or fuel level sensors, check out the available parts in the Mercedes fuel pumps and level sensors category.

For users who want to better understand how to select used components sensitive to engine operating parameters, a guide on vehicle electronics and sensors may be useful. You can find more practical tips in the article Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?, where topics such as selection by catalog numbers, compatibility issues, and examples of use in real-world repairs are discussed.