BMW 1 3 Series 1 E82 E90 E91 N47 Cooling Radiator Water Pipe Hose Diesel 7797257

BMW 1 3 Series 1 E82 E90 E91 N47 Cooling Radiator Water Pipe Hose is an original component designed to work with the radiator in BMW models equipped with the N47 engine. Thanks to its factory geometry and precisely selected cross-section, it ensures stable coolant flow and proper heat dissipation from the engine, which translates into safe and predictable operation of the entire system.

Specifications and technical data

• SKU: 7797257-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7797257
• Substitutable numbers: 17127797257, 7797257
• Fuel type: Diesel
• Category: Coolant Hoses

Purpose and function in the cooling system

This water pipe is part of the Cooling system pipes and hoses category, responsible for transporting fluid between the radiator and other system components in BMW diesel engines. The properly shaped flow path minimizes the risk of turbulence, local overheating, and leaks, which is particularly important in modern diesel units operating under high thermal loads.

Using an original pipe instead of a worn or leaking component helps maintain the correct engine operating temperature, reduces the risk of overheating, and ensures proper cooperation with the thermostat, water pump, and radiator.

Benefits of using an original BMW pipe

Choosing an original cooling system pipe for a BMW diesel engine primarily ensures a perfect fit for factory connectors and mounts. As a result:

• proper connection tightness is maintained,
• the pipe is not under excessive tension,
• the risk of abrasion against adjacent components is reduced,
• the cooling system maintains stable operating parameters.

The original geometry of the pipe also promotes even temperature distribution throughout the circuit, which is particularly important for the durability of the N47 unit and associated components, such as seals, connectors, or plastic housings.

Characteristics of the used component

The offered pipe comes from disassembly and is marked as a used part, which is an attractive cost-effective solution while maintaining the original BMW specification. This type of component is a good choice when the existing pipe shows signs of aging, cracking, swelling, or leaks at the clamps.

During installation, it is recommended to use new hose clamps and check other cooling system components to fully utilize the potential of a functional pipe and maintain stable diesel engine operation across a wide range of loads.

Technical support and additional information

If you are planning a comprehensive repair or upgrade of your BMW's engine area and need other items from the same group, such as additional pipes, return hoses, or sections connecting to the radiator, check out the available parts in the BMW cooling system pipes and hoses category.

To better understand how the condition of pipes, radiators, and fans affects the safety of the engine unit in high temperatures, it is worth reading the guide "Summer heat vs. cooling system: used radiators and fans as a guarantee of savings", where you will find practical tips on operating and diagnosing the cooling system.

If you are also interested in the ecological aspect and want to consciously choose parts from disassembly, read the article on the impact of original used parts on reducing the carbon footprint, which shows how reusing components supports sustainable automotive practices.