BMW 1 3 Series F20 F21 F30 LCI M140i 340i Coolant Line Pipe Hose Turbocharger

BMW 1 Series F20/F21 and 3 Series F30 LCI Turbocharger Coolant Hose is a component from the Hoses, Pipes & Tubes category, designed for the cooling system of turbocharged M140i and 340i units. This is a practical solution for users who need a factory-spec turbocharger coolant hose, structurally matched to a specific BMW generation.

Specifications and technical data

• SKU: 8666856
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8666856
• Substitutable numbers: 11538666856, 8666856, 11537643178, 7643178, EM
• Category: Hoses, Lines & Pipes

Application in the Turbocharger Cooling System

The turbocharger coolant hose in BMW M140i and 340i models is responsible for the controlled flow of coolant through the turbo housing, stabilizing the charge air system's operating temperature. A correctly selected component from this group minimizes the risk of overheating, reduces thermal stress, and supports turbocharger durability under dynamic driving conditions.

The offered hose is structurally matched to the engine architecture used in the BMW 1 Series F20/F21 and 3 Series F30 LCI, which facilitates installation in place of the factory component and allows for the preservation of the original coolant line routing.

Technical Characteristics and Fitment

As a part of the BMW brand, the turbocharger coolant hose has been designed for compatibility with factory mounting points and connection diameters within the cooling system. This ensures the integrity of connections and the correct flow direction of coolant without the need for system modifications.

The component has a dedicated OEM part number and assigned replacement numbers, which simplifies compatibility verification with specific engine versions and model years. Before purchasing, it is advisable to compare the designations with the service documentation or the existing component in your vehicle to confirm full compatibility.

Product Condition and Benefits of Choosing a Used Part

The offered turbocharger coolant hose is a used product, allowing for an economical repair of the cooling system while maintaining the original manufacturer's specifications. For many BMW users, this represents a sensible compromise between cost and preserving the original hose geometry and compatibility with other system components.

If you want to better understand the principles of safely choosing used parts and optimally plan your car's repairs, it's worth checking out the guide Used Parts – Your Guide to the Best Deals in the Automotive Store, where you'll find practical tips on the operation and selection of components.

Why Use a Dedicated BMW Turbocharger Coolant Hose

Using a coolant hose specifically designed for the turbocharger in BMW 1 and 3 Series offers a range of operational benefits:

• maintaining stable turbocharger operating temperature across a wide range of loads,
• preserving the original routing of the cooling system in the engine bay,
• reducing the risk of leaks thanks to matched ends and connection diameters,
• easier diagnostics and servicing due to compatibility with manufacturer documentation.

For BMW owners who are upgrading or servicing their boost system, choosing an original turbocharger coolant hose is a way to maintain predictable engine performance and proper interaction with other cooling system components.

Related Items from the BMW Hoses, Pipes & Tubes Category

When servicing the turbocharger cooling system, it is advisable to simultaneously check the condition of other coolant hoses, return lines, and other components from the same group installed in your BMW. If you are planning a comprehensive replacement or looking for additional components of this type for your car, check the available parts in the BMW Hoses, Pipes & Tubes category.