BMW 1 3 Series E88 E90 E90N E91 N45 N46 Engine Feed Radiator Top Hose 7531768

The BMW E88 E90 E90N E91 N45 N46 Water Hose Pipe Tube is an original cooling system component from the BMW group, designed for precise coolant flow in N45 and N46 engines. This product from the Hoses, Pipes, and Tubes category ensures proper working fluid circulation, contributing to stable engine operating temperatures and safe driving conditions.

Specifications and technical data

• SKU: 7531768
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7531768
• Substitutable numbers: 17127531768, 7531768
• Category: Hoses, Lines & Pipes

Application and Compatibility

The presented water hose is designed for BMW E88, E90, E90N, and E91 models equipped with N45 and N46 engines. This ensures a perfect fit with the engine bay's factory geometry, proper hose routing relative to other components, and adherence to the manufacturer's original cooling system design.

Thanks to its OEM-compliant construction, the water pipe integrates seamlessly with factory connectors, clamps, and mounting elements, simplifying installation and minimizing the risk of leaks due to misaligned shapes or diameters.

Construction and Performance Parameters

This hose is part of the group of components responsible for transporting coolant between key system components. Its appropriately selected cross-section and shape ensure stable flow, while the manufacturer-designed construction minimizes stresses arising from engine operation and temperature fluctuations.

Key advantages of this solution include:

• Factory-matched fit for the cooling system in N45/N46 engines,
• Stable coolant flow under typical operating conditions,
• Compatibility with original mounting points in E88, E90, E90N, E91 bodies,
• Reduced risk of engine overheating due to proper fluid circulation.

Component Condition and Benefits of Choosing BMW Parts

The offered water hose is a used part, sourced from dismantling. This means you can use an original BMW component at an attractive price, while maintaining factory geometry and cooling system compatibility.

Choosing an original hose from the Hoses, Pipes, and Tubes category allows you to:

• Maintain compliance with BMW service documentation,
• Preserve the manufacturer-specified routing of hoses in the engine bay,
• Minimize installation time thanks to a plug-in fit for the existing system.

Why Use This Hose in Your Cooling System?

Using an original water pipe to replace a worn or leaking component restores proper cooling system function without requiring system modifications. This is particularly important for modern N45 and N46 units, where stable operating temperature directly impacts engine durability, accessory performance, and fuel combustion parameters.

Replacing the hose with a component that matches the factory design reduces the risk of localized overheating, coolant leaks, and air bleeding issues. This is a practical solution for owners who want to maintain their BMW in a technical condition close to its factory configuration.

Other BMW Hoses, Pipes, and Tubes and Maintenance Tips

If you are also looking for other cooling system components from the Hoses, Pipes, and Tubes category for this brand, check out the BMW hoses, pipes, and tubes available in our assortment to comprehensively complete your car's system.

To maximize the potential of used components and ensure their longer service life in your vehicle, it's worth familiarizing yourself with practical tips on maintenance and installation – you can find them in the article How to Extend the Lifespan of Used Car Parts?, which describes proven methods for operating dismantled parts.