BMW X5 E70 LCI N57 N57S Water Hose Coolant Cooling Pipe Line Radiator 7808079

The BMW X5 E70 LCI N57 N57S Water Hose Pipe Tube is a component from the BMW Cooling System Hoses and Pipes category, designed for facelifted BMW X5 E70 models with N57 and N57S diesel engines. It is responsible for the efficient flow of coolant within the system, which is crucial for maintaining a stable operating temperature of the Diesel engine.

Specifications and technical data

• SKU: 7808079
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7808079
• Substitutable numbers: 7808079, 17127808079, KD
• Fuel type: Diesel
• Category: Coolant Hoses

Purpose and Compatibility

The presented water hose has been designed for the cooling system in BMW X5 E70 LCI models equipped with N57/N57S family diesel engines. Its construction, tailored to the factory cooling system, ensures proper fluid flow between system components, minimizing the risk of leaks and engine overheating issues.

By maintaining the original geometry and connection diameters, the hose works seamlessly with stock connectors and other cooling system components, facilitating installation and reducing the need for modifications.

Technical Characteristics of the Hose

The water hose belongs to the group of consumables that operate under elevated temperatures and variable pressure in diesel engines. Particularly important in this application are:

• material resistance to prolonged contact with coolant and the high exhaust temperatures characteristic of diesel engines,
• hose shape stability, reducing the risk of kinks and flow restriction,
• precise fit to factory brackets and guides within the engine bay.

A properly selected water hose helps maintain uniform coolant flow, contributing to safe engine operation under load and reducing the risk of overheating-related failures.

Benefits of Using an Original Hose in the Cooling System

Choosing a water hose dedicated to a specific BMW X5 E70 LCI model with an N57/N57S engine allows for the preservation of the cooling system's original operating parameters. This solution is particularly beneficial for users who expect:

• stable engine operating temperature in city and highway driving,
• reduced risk of coolant leaks at connections,
• easy installation without the need to adapt universal replacements.

This component directly impacts the durability of the engine, turbocharger, and other components that interact with the cooling system, making its condition and fit crucial for the long-term operation of the vehicle.

Product Condition and Practical Application

The offered water hose is a used part, which translates to a favorable compromise between purchase cost and functionality. For many BMW X5 E70 LCI diesel engine owners, this is a sensible solution for comprehensive cooling system maintenance, for example, when replacing the radiator, thermostat, or other hoses.

During installation, it is recommended to follow the standard cooling system bleeding procedure and check for leaks after the first few engine operating cycles. A correctly chosen water hose helps maintain efficient coolant circulation, which is particularly important under high loads and summer temperatures.

BMW Cooling System and High-Temperature Operation

BMW N57/N57S diesel engines generate a significant amount of heat, making an efficient cooling system – including properly selected water hoses – crucial for their durability. During the summer, it is important to pay special attention to the condition of hoses, the radiator, and fans to avoid overheating and costly repairs. If you want to better understand how high temperatures affect the entire cooling system, check out our guide Summer Heat vs. Cooling System – How Used Parts Can Help with Economical Operation.

Other BMW Cooling System Hoses and Pipes

If you are assembling a complete set of cooling system components and also need other BMW Cooling System Hoses and Pipes, check out our dedicated offer: BMW Cooling System Hoses and Pipes. This will help you more easily select a cohesive set of components tailored to your model, simplifying servicing and reducing the risk of future leaks.