Mercedes-Benz A B W169 W245 Pump Housing Water Pump Engine Cooling A6402010001

The Mercedes W169 W245 Water Pump Housing is an original part from the Water Pumps category, designed for the cooling system of engines in A-Class (W169) and B-Class (W245) models. The housing ensures stable mounting of the water pump, proper coolant flow, and a sealed connection with other system components. This is a solution for users looking for a part with factory geometry and fit for Mercedes construction.

Specifications and technical data

• SKU: A6402000020
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6402010001
• Substitutable numbers: A6402000020, A 640 200 00 20, A6402010001, A 640 201 00 01, EM
• Category: Water Pumps

Purpose and Function of the Water Pump Housing

The water pump housing in the Mercedes W169 and W245 is responsible for the precise positioning of the pump relative to the engine block and cooling channels. A correctly selected housing:

• maintains the proper seal of the cooling system,
• ensures stable mounting of the water pump,
• allows for proper coolant circulation in the engine,
• minimizes the risk of leaks and engine overheating.

Thanks to its original design, the housing works with factory spigots, seals, and mountings, which facilitates installation and servicing.

Benefits of Using an Original Housing in Mercedes W169 / W245

Using an original Mercedes water pump housing allows you to maintain the cooling system's operating parameters in line with the manufacturer's specifications. Key benefits include:

• Factory Fit – compatibility with engine geometry and accessories, without the need for modifications.
• Stable water pump operation – proper support and positioning of the impeller and seals.
• Better compatibility with original seals and mounting bolts.
• Possibility of trouble-free diagnostics and servicing based on manufacturer documentation.

This solution is particularly recommended for cooling system repairs when you want to maintain the engine's factory operating characteristics and reduce the risk of recurring leaks.

Condition, Verification, and Preparation for Installation

The water pump housing is a used part, which allows for optimized repair costs while maintaining the original construction. Before installation, it is recommended to:

• check the mating surfaces for mechanical damage,
• verify the bolt holes and connection spigots,
• use new seals and tighten bolts to the correct torque according to service documentation.

This approach increases the durability of the repair and reduces the risk of further interventions in the cooling system.

Selection by Numbers and Integration with the Engine System

The housing works with the water pump and other cooling system components dedicated to the Mercedes A-Class W169 and B-Class W245. When selecting parts, it is advisable to consult part numbers and service documentation to ensure full compatibility with the specific engine version. A correctly selected housing:

• facilitates plug-and-play installation,
• ensures correct routing of cooling channels,
• allows for maintaining stable engine operating temperature.

Other Mercedes Water Pumps and Technical Knowledge

If you are looking for other Mercedes Water Pumps compatible with various models of this brand, check out our dedicated category: Mercedes Water Pumps. There you will find a wide selection of cooling system components, which will make it easier to gather all the necessary parts in one repair.

During servicing, it is also worthwhile to understand the relationships between the cooling system and engine power supply. In this context, an article describing the diagnostics and selection of power supply components may be helpful: Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair. It allows for better planning of comprehensive engine unit servicing, combining information about various engine components.