BMW E81 E82 E87 LCI Engine Water Coolant Hose Pipe Diesel N47 9127402

BMW E81 E82 E87 LCI Diesel Engine Coolant Hose N47 is an original cooling system component from the Hoses, Pipes, and Tubes group, designed for diesel engines. Engineered by BMW for stable coolant flow, it supports the correct operating temperature of the N47 engine and reduces the risk of overheating.

Specifications and technical data

• SKU: 9127402
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 64219127402
• Substitutable numbers: 9127402, 64219127402, 51757906821, 7906821
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and Function in the Cooling System

The coolant hose in a diesel engine is responsible for safely directing the cooling medium between key components of the powertrain. This is particularly important for the N47 diesel engine due to its higher thermal efficiency and greater thermal loads. A properly selected hose helps maintain a stable operating temperature, which translates to smoother operation, longer lifespan of accessories, and reduced risk of overheating-related failures.

Benefits of Using an Original BMW Hose

Using an original coolant hose in BMW E81, E82, and E87 LCI models ensures:

• precise fit to the factory cooling system without modifications,
• maintenance of the manufacturer's designed fluid flow geometry,
• proper interaction with other system components such as spigots, connectors, and housings,
• compliance with BMW's factory quality standards for temperature and pressure resistance.

This makes the hose a solid foundation for restoring the cooling system's proper function after repair or powertrain upgrade.

Technical Characteristics and Installation

The hose belongs to the Hoses, Pipes, and Tubes group, meaning it is designed to operate in a coolant environment and withstand the variable thermal loads typical of diesel engines. The hose's construction is adapted to the specific routing within the engine bay of the BMW E81, E82, and E87 LCI, facilitating installation and minimizing the risk of stress from improper positioning.

This component is intended for diesel-powered vehicles, thus meeting the temperature and operating condition resistance requirements characteristic of this powertrain. Its used condition allows for economical repair while maintaining the original manufacturer's specifications.

Practical Application in Servicing

Replacement of the coolant hose is recommended when leaks, corrosion on connections, coolant level drops, or visible mechanical damage occur. For the N47 engine, which operates under demanding thermal conditions, a functional hose significantly impacts:

• maintaining stable engine operating temperature,
• reducing the risk of air ingress into the cooling system,
• seamless cooperation with the thermostat and radiator,
• extending the lifespan of the powertrain and accessories.

Selecting a hose that matches the original BMW specification is particularly crucial when servicing vehicles subjected to intensive use or diverse driving conditions.

System Expansion and Related Parts

If you are planning a comprehensive engine area repair or upgrade for your BMW and require other components from the same group, such as additional hoses, flexible pipes, or rigid coolant tubes, check the available parts in the BMW Hoses, Pipes, and Tubes category.

For users interested in optimizing service costs and making informed choices about used parts for repairs on other brands, an article describing a practical approach to purchasing aftermarket components may be helpful: Repairing a Volkswagen for Pennies? Discover How to Save on Original Car Parts.

Summary

The BMW E81 E82 E87 LCI Diesel Engine Coolant Hose N47 is an original cooling system component that allows for the restoration of the diesel engine's factory operating parameters. Choosing a hose from the Hoses, Pipes, and Tubes group that matches the BMW design ensures proper coolant flow, correct installation fit, and predictable system behavior in daily operation.