BMW E87 E90 Cooling Radiator Water Hose Pipe N46 Petrol 7572159

BMW E87 E90 Cooling Radiator Water Hose Pipe N46 Petrol is an original cooling system component designed for N46 petrol engines in BMW 1 Series E87 and 3 Series E90 models. This component from the Hoses, pipes and lines category is responsible for the stable flow of coolant, which directly affects the operating temperature of the engine. Thanks to its factory geometry and precise profile, it ensures a secure fit to the cooling system without the need for any modifications.

Specifications and technical data

• SKU: 7572159
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7572159
• Substitutable numbers: 11537572159, 7572159, 11537530647, 7530647
• Fuel type: Petrol
• Category: Hoses, Lines & Pipes

Purpose and function in the cooling system

The water hose in this design is a part of the system transporting coolant between key components of the N46 engine. The properly selected internal diameter and shape of the sections allow for maintaining the correct pressure and flow, which reduces the risk of engine overheating during city and highway driving.

A properly selected water hose:

• ensures a tight connection with the connectors and housings of the cooling system components,
• maintains a stable coolant flow across the entire load range,
• minimizes the risk of leaks and pressure drops in the installation.

Compatibility with the N46 engine (petrol)

The presented hose has been designed for N46 petrol units used in the BMW E87 and E90. This means it is perfectly matched to the specific routing of the cooling system in these models, including the layout of connectors, housings, and auxiliary components. Fuel type: petrol is crucial here, as the cooling system in petrol engines has different thermal characteristics than in diesel units.

Because this is an original BMW solution, compatibility with the factory engine bay architecture is maintained, which facilitates installation and subsequent maintenance.

Performance characteristics and installation

The water hose for the BMW E87/E90 with an N46 engine has been manufactured to allow for direct installation in place of a worn-out part. Proper profiling and support points allow for correct routing of the hose in the engine bay, while maintaining clearance from hot parts and moving auxiliary components.

The main advantages of this solution include:

• factory fit for the cooling system in specific BMW models,
• maintenance of the original hose routing, which limits stress and twisting,
• possibility of using standard clamps and mounts provided by the manufacturer.

The item comes from the group of used parts, which allows for an economical repair of the cooling system while maintaining the original design specifications.

Benefits of using an original BMW hose

Using a water hose from the BMW range allows you to maintain the consistency of the entire cooling system with the factory design assumptions. The appropriate stiffness, flexibility, and geometry translate into stable operation of the N46 engine under various operating conditions.

By choosing this component:

• you reduce the risk of mismatch, typical for aftermarket parts with a universal profile,
• you maintain compatibility with original mounting points and hose routing,
• you increase the predictability of the cooling system's operation in the long term.

System expansion – other BMW hoses and cooling elements

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

To better plan your repair budget and consciously choose proven recycled parts, it is worth checking out the guide describing the selection of used brake system components – you will find practical tips in the article Brake calipers under the microscope – how to reduce repair costs by choosing proven recycled parts.