Mercedes W169 W245 Vacuum Pump A200 CDI 640941 2.0 Diesel A6402300365

Mercedes W169 W245 Vacuum Pump A200 CDI 640941 2.0 Diesel is a specialized vacuum system component designed for the A200 CDI diesel engine series. Thanks to its original factory design for the Mercedes brand, it ensures the proper generation of vacuum necessary for the operation of the brake booster and other components in the diesel engine.

Specifications and technical data

• SKU: A6402300365
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6402300365
• Substitutable numbers: A6402300365, A 640 230 03 65
• Fuel type: Diesel
• Category: Vacuum Pumps

Purpose and function in the vacuum system

The offered pump belongs to the Vacuum pumps category and is structurally matched to the Mercedes A-Class W169 and B-Class W245 models with a diesel engine. In diesel systems, which lack a traditional vacuum source from the throttle, this component is responsible for providing a stable vacuum supply to key sub-assemblies, which translates into predictable brake booster performance and the operation of vacuum-controlled elements.

The pump works with the engine's lubrication and intake systems, maintaining an appropriate vacuum level across a wide range of loads. A correctly selected component of this type reduces the risk of decreased braking efficiency, unstable operation of vacuum actuators, and engine performance errors.

Benefits of using an original vacuum pump

Using an original vacuum pump in a Mercedes W169/W245 with a diesel engine allows you to maintain the factory performance parameters of the braking system and engine accessories. The main advantages include:

• maintaining the proper vacuum level throughout the entire engine speed range,
• stable operation of the brake booster and predictable brake pedal feel,
• correct control of vacuum-operated elements in the diesel unit,
• better compatibility with factory electronics and control software.

For the user, this means more consistent vehicle behavior in daily operation and a lower risk of diagnostic issues resulting from insufficient vacuum.

Characteristics of the used component

The presented vacuum pump is a used part, sourced from vehicle dismantling. This type of part is a sensible choice for servicing older Mercedes vehicles, where it is important to combine correct operating parameters with repair cost control. A properly selected used pump allows you to restore the efficiency of the vacuum system without the need to invest in an expensive new component.

Before installation, a standard workshop procedure is recommended: checking the vacuum system for leaks, verifying the condition of the hoses, and checking the correct operation of the brake booster. This approach facilitates the full utilization of the offered pump's potential and limits the risk of secondary faults.

Selection by numbers and compatibility with the diesel system

The pump has been designed to work with a compression-ignition engine, which is why its construction is adapted to the specifics of Diesel units. When selecting parts, it is worth using the OEM number and interchangeable numbers visible in the technical specification – this allows for precise verification of compatibility with a specific A200 CDI version.

For additional support in the field of diagnostics and the selection of power supply elements and diesel engine accessories, you can use our guide material: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration. The article helps organize knowledge about the interaction of individual components in modern diesel units.

Expanding the vacuum system in a Mercedes

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 vacuum pumps, vacuum hoses, or control valves, check out the available parts in the Mercedes vacuum pumps category.

Thanks to this, you can renew the entire vacuum system in one service stage, which reduces the risk of later leaks and allows you to maintain consistent operating parameters for all related components.