BMW E90 E91 E92 325d Heat Exchanger Oil Cooling Pipe Inlet Outlet Hose 7577641

BMW E90 E91 E92 325d Heat Exchanger Oil Cooling Pipe Inlet Outlet Hose is an original lubrication system component from the Oil coolers and hoses group, designed for 3 Series models with the 325d engine. It ensures tight and stable oil routing between components, which translates into safe engine operation and proper oil cooling under demanding operating conditions.

Specifications and technical data

• SKU: 7577641
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7577641
• Substitutable numbers: 17227577641, 7577641, 17227577642, 7577642, 17227547209, 7547209, 17227547210, 7547210
• Category: Engine Oil Coolers & Lines

Purpose and function in the lubrication system

The oil hose used in BMW E90, E91, and E92 series with the 325d unit is responsible for the controlled flow of oil between the lubrication and cooling system components. A properly selected oil pipe reduces pressure drops, minimizes the risk of leaks, and supports a stable oil operating temperature, which is important for both engine durability and oil cooler efficiency.

This component is particularly important in diesel vehicles, where the oil operates under higher thermal loads. The properly designed cross-section and geometry of the hose help maintain the correct flow of the medium, thereby supporting uniform lubrication of all key components.

Original origin and fitment for BMW

The hose was designed by BMW as a system part, which means full compatibility with the factory architecture of the lubrication and oil cooling system in E90, E91, and E92 325d models. The original connection geometry, length, and routing shape allow for installation at existing mounting points without the need for modifications or the use of adapters.

As a result, factory oil routing paths are maintained, and the risk of collision with other engine bay components is limited. Proper fitment also translates into hose stability during engine operation, reducing mechanical stress and decreasing the risk of damage in the long term.

Characteristics of the used component

The offered oil hose is in Used condition, meaning it has been removed from a vehicle but retains the functionality required for further use. Such components are often chosen as an economical alternative to new parts, especially in the case of specialized lubrication and oil cooling system components.

Choosing a used oil hose allows for reduced repair costs while maintaining the manufacturer's original specifications. This solution works especially well when the priority is to quickly restore vehicle performance while maintaining compliance with the factory system design.

Benefits of using an original oil hose

Using a hose from the Oil coolers and hoses group dedicated to the BMW 325d E90/E91/E92 provides a number of practical benefits:

• maintenance of factory oil flow parameters in the lubrication system,
• proper cooperation with the oil cooler and other system components,
• installation at original mounting points without interfering with the vehicle's structure,
• reduced risk of leaks thanks to matched connections and hose shape.

For workshops and individual users, this means a simpler service process and greater predictability of the repair result, which is important when working with modern BMW diesel units.

Expanding the oil cooling system in BMW

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as additional oil hoses, return pipes, or oil cooler supply components, check the available parts in the BMW Oil coolers and hoses category.

To better understand the impact of temperature on the cooling and lubrication system and to make informed choices when selecting used components, it is worth reading the guide describing operation in high temperatures – you will find it in the article Summer heat vs. cooling system: used radiators and fans as a guarantee of savings.

Summary

BMW E90 E91 E92 325d Heat Exchanger Oil Cooling Pipe Inlet Outlet Hose is a functional, original lubrication system component that allows for the restoration of proper oil circulation and supports effective cooling in the 325d engine. Thanks to the factory fitment for 3 Series models, installation is predictable, and system operating parameters remain in line with the manufacturer's specifications, providing a solid foundation for a durable and technically correct repair.