BMW E81 E82 E87 Hose Cooling System Pipe Return Line Thermostat Heating 7548240

BMW E81 E82 E87 Hose Cooling System Pipe Return Line Thermostat Heating is a component from the Cooling system hoses and pipes group, designed for operation in the engine cooling system of compact BMW 1 Series models. It enables efficient transport of coolant between components, supporting stable engine operating temperatures and safe heat dissipation. This is a practical solution for users looking for a proven, used component with factory geometry.

Specifications and technical data

• SKU: 7548240
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7548240
• Substitutable numbers: 7548240, 17127548240, 7526392, 17127526392
• Category: Coolant Hoses

Function and role in the BMW cooling system

The water hose used in BMW E81, E82, and E87 models is responsible for directing coolant flow between system components such as the radiator, engine block, or connection ports. A properly shaped flow path minimizes the risk of turbulence, local overheating, and leaks at the connections.

By maintaining the factory routing of the hose, the cooling system can operate under stable conditions, which translates into uniform heat dissipation from the engine and reduces the risk of overheating during intensive city and highway driving.

Construction and fitment for the BMW 1 Series

The water hose in question has been designed specifically for the engine bay architecture of the BMW E81, E82, and E87, taking into account limited installation space and the characteristic routing of the cooling system. The shape and diameter of the hose are adapted to factory ports, which facilitates installation and ensures a tight connection with other system components.

Such fitment reduces stress on the joints, decreases the risk of abrasion against adjacent components, and allows for the preservation of the manufacturer's original engineering concept. For the user, this means predictable cooling system behavior and easier diagnostics of potential faults.

Benefits of using an original BMW hose

Using a water hose sourced from a BMW allows you to maintain the structural integrity of the entire cooling system. Original solutions are designed for long-term operation under varying thermal and pressure conditions, which is especially important in higher power density units.

• factory fitment to ports and mounting brackets,
• preservation of the original coolant flow geometry,
• easier installation and removal compared to universal-shape replacements,
• consistency with other BMW cooling system components.

For the user, this means more predictable vehicle behavior in high ambient temperatures and during prolonged driving under load.

Product condition and service application

The item is offered as a used part, which represents a reasonable compromise between repair costs and maintaining the original design of the cooling system. This type of component is suitable both for standard replacement of a worn hose and for post-collision repairs, where it is necessary to restore the cooling system routing.

Choosing a used water hose is particularly attractive for older BMW 1 Series vehicles, where optimizing service budgets is important, while the owner still wants to stick to solutions consistent with the vehicle's factory specifications.

Technical support and additional components

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

To better understand how thermal conditions affect the durability of water hoses, radiators, and fans, and how to reasonably plan repairs using aftermarket components, it is worth reading the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, which discusses the practical aspects of cooling system operation in high temperatures.