BMW F07 F10 F11 F12 F13 F01 F02 Coolant Return Pipe Hose Line 9170342

BMW F07 F10 F11 F12 F13 F01 F02 Coolant Return Pipe Hose Line is an original cooling system component designed for the precise return of fluid to the circulation system. Thanks to its factory geometry and perfect fit for specific BMW generations, it ensures stable engine operating parameters and reliable cooperation with other cooling system components. This is a practical solution for users who want to maintain the structural and functional integrity of their BMW.

Specifications and technical data

• SKU: 9170342
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9170342
• Substitutable numbers: 9170342, 64509170342
• Part type: Hose
• Category: Coolant Hoses

Purpose and function in the cooling system

The offered hose belongs to the Cooling system pipes and hoses group and is responsible for the return of coolant in the engine installation. A properly selected component of this type:

• stabilizes fluid flow in the return circuit,
• reduces the risk of local engine overheating,
• ensures proper cooperation with the radiator, water pump, and other hoses.

Thanks to a design consistent with BMW factory solutions, the hose maintains the correct connection diameters and shape, which facilitates installation in the engine bay and maintains connection tightness.

Compatibility with BMW F-series and F0x models

The coolant return pipe has been designed for BMW F07, F10, F11, F12, F13, as well as F01 and F02 platforms, allowing it to be used in a wide range of body styles – from sedans and estates to coupe and convertible versions. Using an original BMW solution in this area:

• facilitates maintaining the consistency of the cooling system in premium vehicles,
• minimizes the risk of fitment issues associated with aftermarket replacements of different geometry,
• allows for maintaining factory hose routing in the engine bay.

This is particularly important in modern engines, where installation space is limited and every cooling system component has a strictly defined position.

Component characteristics and benefits of using BMW parts

As a BMW brand product, the coolant return pipe is manufactured in accordance with the manufacturer's internal standards regarding resistance to temperature, pressure, and operating fluids. Using an original component in this part of the system allows you to:

• maintain predictable engine operating parameters under various load conditions,
• ensure compatibility with factory clamps, brackets, and connectors,
• reduce the risk of leaks resulting from inaccurate fitment.

The item comes from a group of used parts, which allows for economical repair while maintaining the original BMW specification. This is a practical solution for users and workshops that prefer OEM components in systems responsible for engine thermal management.

Technical support, diagnostics, and part selection

When selecting a coolant return pipe for a specific engine version and model year of a BMW, it is worth verifying the manufacturer's markings and the cooling system configuration in the vehicle. Comparing the shape and length of the hose with the part removed from the car, as well as consulting BMW service documentation, can be helpful.

To better understand the impact of an efficient fluid circuit on engine durability and the symptoms of overheating, it is worth reading our guide: Engine cooling system – overheating, repair, and used radiators. The article discusses practical aspects of diagnostics and service of cooling systems in popular models.

Cooling system expansion and related parts

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

For repairs carried out in a short time, information on the use of used OEM elements in service may be useful – this is described in more detail in the article: Availability of car parts off-the-shelf vs. repair time – how do used OEM parts shorten workshop stays?, which shows how properly selected components can speed up the completion of workshop work.