BMW 1 3 Series E82 E90 E91 Expansion Tank Oil Cooler Coolant Pump Hose 7797260

BMW 1 3 Series E82 E90 E91 Expansion Tank Oil Cooler Coolant Pump Hose is an original cooling system component from the Lines, hoses and pipes category, designed for 1 and 3 Series models. Thanks to its factory geometry and precise fit for BMW installations, it ensures stable coolant flow and proper integration with other system components, which translates into safe engine operating conditions.

Specifications and technical data

• SKU: 7797260
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7797260
• Substitutable numbers: 17127797260, 7797260, AS
• Category: Hoses, Lines & Pipes

Purpose and function in the cooling system

The water cooling pipes in BMW E82 and E90 models are responsible for the precise routing of coolant between key system components, such as the engine block, radiator, or auxiliary heat exchangers. Properly shaped hoses minimize the risk of flow turbulence, leaks, and unwanted stresses resulting from engine operation.

The offered item has been designed as a BMW system part, which means it maintains the correct cross-sectional diameter, length, and mounting points. As a result, installation is straightforward, with no need to modify other cooling system components.

Benefits of using original BMW cooling pipes

Using original water cooling pipes in BMW E82 and E90 models helps maintain engine operating parameters within the manufacturer's specifications. The most important advantages include:

• Stable coolant flow – the correct cross-section and shape of the hoses support efficient heat dissipation.
• Factory fit for mounts – the pipes work with original brackets and clamps, which reduces vibration and mechanical stress.
• Consistency with other system elements – the hoses are designed as part of a complete BMW cooling system, which facilitates diagnostics and maintenance.

For the user, this means more predictable engine behavior under various load conditions and a lower risk of overheating resulting from improper fluid flow.

Product characteristics and service application

The presented BMW water cooling pipes are suitable both for standard replacement of worn hoses and for repairs following a cooling system failure. The item is sourced from dismantling, which allows for an economical restoration of system efficiency while maintaining the original manufacturer's specifications.

In practice, the product is particularly useful in situations where:

• existing hoses show signs of wear or leaks,
• it is necessary to replace several cooling system components after engine overheating,
• it is important to maintain the factory routing of hoses in the engine bay.

Integration with other BMW cooling system components

Water cooling pipes in BMW E82 and E90 models work in conjunction with the radiator, thermostat, connectors, and other flexible hoses. The correct positioning and rigidity of the component limit the risk of chafing, twisting, and uncontrolled stresses that could lead to leaks. Choosing an original component also facilitates subsequent service work, as the mechanic deals with a system consistent with the manufacturer's documentation.

If you are planning a comprehensive repair or upgrade of the cooling system area in your BMW and need other items from the same group, such as additional lines, flexible hoses, or rigid fluid pipes, check the available parts in the BMW lines, hoses and pipes category.

Technical support and knowledge about BMW dismantled parts

When working with the cooling system and other systems in BMW vehicles, it is worth using reliable sources of knowledge regarding the selection and installation of dismantled components. Additional information on the practical use of used parts in the service of 3 and 5 Series models can be found in the article Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 Series models using dismantled parts?.