BMW X3 Series E83 E83N LCI 3.0d M57N2 Hose Engine Inlet Coolant Pipe 3401584

BMW X3 Series E83 E83N LCI 3.0d M57N2 Hose Engine Inlet Coolant Pipe is an original cooling system component designed for the precise routing of coolant in the M57N2 engine. Thanks to its factory geometry and perfect fit for the specific BMW X3 E83 version, it ensures stable system operating parameters and helps maintain a safe engine temperature. It is a practical solution for users looking for a proven coolant hose with a design that complies with the manufacturer's specifications.

Specifications and technical data

• SKU: 3401584
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 3449106
• Substitutable numbers: 17123449106, 3449106, 17120361781, 0361781, 17123401584, 3401584
• Category: Coolant Hoses

Purpose and function in the cooling system

The presented coolant hose is part of the Cooling system hoses and pipes category, responsible for transporting coolant between selected components of the BMW X3 E83 3.0d M57N2 engine. A properly selected hose minimizes the risk of leaks, pressure drops, and local overheating, which translates into stable engine operation under various load conditions.

The original design of the hose ensures proper placement in the engine bay, maintaining appropriate bending radii and distance from hot and moving parts. This is crucial both from the point of view of safety and the durability of the entire cooling system.

Benefits of using an original BMW hose

Using a coolant hose dedicated to the BMW X3 E83 3.0d M57N2 allows you to maintain factory coolant flow parameters. In practice, this means:

• proper liquid circulation throughout the entire cooling circuit,
• reduced risk of engine overheating under heavy load,
• better compatibility with other system components, such as the radiator or water pump,
• easier installation thanks to the retention of original mounting points and hose routing.

For users who prioritize technical correctness and compliance with the manufacturer's design, this is a solution that ensures predictable cooling system behavior and reduces the risk of failures resulting from incorrectly fitted aftermarket replacements.

Characteristics and condition of the component

The coolant hose comes from the BMW brand and is an OEM-type component, which means it complies with factory manufacturing and geometry standards. The product is in used condition, making it a reasonable compromise between repair costs and maintaining the vehicle's original technical specifications. For many BMW X3 E83 3.0d M57N2 users, this is a practical alternative to new parts, especially during comprehensive service work within the cooling system.

The component has an assigned OEM part number and interchangeable numbers, which facilitates verification of compatibility with a specific vehicle configuration and model year. Before purchasing, it is worth comparing the markings with service documentation or the number of the previously used hose to ensure full compatibility.

Technical support and selection of cooling system components

When working on the cooling system, it is worth paying attention to the general condition of other components – hoses, connectors, clamps, and the radiator itself. A properly selected and leak-free coolant hose, combined with a properly bled system, helps reduce the risk of engine overheating and premature wear of components.

If you want to better understand the impact of individual components on engine operating temperature and symptoms typical of a faulty cooling system, check out the article: Engine cooling system – overheating, repair, and used radiators. This is a practical addition to your knowledge when planning service for a BMW or other models with an extensive cooling system.

Repair economics and used OEM parts

Choosing a used OEM coolant hose is often a conscious decision that allows you to reduce repair costs while maintaining original manufacturing quality. In many cases, such a solution is beneficial, especially when several cooling system components are being replaced simultaneously. If you are interested in the broader context of saving on service while maintaining a reasonable level of technical safety, the following material may be helpful: Rising repair costs and the boom in used parts – how to save on car service?.

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