BMW X3 Series E83 E83N LCI 3.0d Hose Engine Inlet Coolant Pipe 3400407

BMW X3 E83 E83N LCI 3.0d Water Hose Pipe is an original cooling system component from the Hoses, Pipes and Tubes group, designed for use in facelifted BMW X3 E83 generation models. This is a practical solution for users who want to restore proper coolant circulation while maintaining the factory performance characteristics of the 3.0d engine.

Specifications and technical data

• SKU: 3400407
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 3400407
• Substitutable numbers: 64213400407, 3400407
• Category: Hoses, Lines & Pipes

Purpose and Function in the Cooling System

The presented water pipe has been designed to maintain a stable operating temperature of the engine unit in the BMW X3 E83/E83N LCI 3.0d. It is responsible for safely directing coolant between system components, which directly impacts engine protection against overheating and ensures even heat dissipation.

Thanks to its design, which aligns with factory solutions, the hose ensures proper positioning within the engine bay, minimizing the risk of chafing, kinks, or leaks. This is particularly important in vehicles subjected to intensive use, where the stability of the cooling system translates to the durability of other components.

Benefits of Using an Original BMW Pipe

Using a water pipe originating from BMW allows for adherence to the factory cooling system geometry and operating parameters specified by the manufacturer. In practice, this means:

• secure fit to the connectors and mounting points in the engine bay,
• appropriate stiffness and flexibility of the material within typical operating temperature ranges,
• reduced risk of incorrect installation compared to universal-fit aftermarket parts.

For the user, this translates to more predictable cooling system behavior and a lower risk of failures due to leaks or improper hose routing. Choosing such a component is particularly beneficial when servicing vehicles where maintaining consistency with the factory specification is crucial.

Condition, Verification, and Service Application

This component comes from the used BMW parts circulation, allowing for an economical restoration of the cooling system's functionality while preserving the original design. This type of pipe is suitable for both standard replacement of worn-out parts and for repairs after a failure, where restoring sealing and proper fluid flow is necessary.

Before installation, a standard inspection of the cooling system is recommended – including the condition of other hoses, clamps, and connectors – to fully utilize the potential of the replaced component and avoid secondary leaks. A correctly selected water pipe is a vital element for the stable operation of the 3.0d diesel engine, especially under variable load conditions and on long journeys.

Part Selection by Numbers and Technical Support

The product has a dedicated OEM part number and associated interchangeable numbers, which facilitates precise identification and matching to the specific configuration of the BMW X3 E83/E83N LCI 3.0d. If in doubt, it is advisable to compare the markings with the vehicle's documentation or the removed part to ensure compatibility with the specific vehicle.

If you want to better understand how to safely select used components for your car and avoid mistakes when matching OEM markings, consult the expert advice described in the article No More Wrong Purchases! How to Professionally Select Used Car Parts.

Expanding BMW Cooling System Service

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