Radiator Water Hose BMW E81 E87 LCI 116i N43 Engine Cooling Pipe Petrol 7577964

Radiator Water Hose BMW E81 E87 LCI 116i N43 Engine Cooling Pipe Petrol is an original cooling system component designed for BMW models with petrol engines. Engineered as part of the factory cooling system, it ensures stable coolant flow and proper heat dissipation from the power unit. By being tailored to the specific generation of the BMW E81/E87 LCI, this hose allows for a precise, service-grade replacement of a worn component without compromising functionality.

Specifications and technical data

• SKU: 7577964-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7577964
• Substitutable numbers: 17127577964, 7577964, BG
• Fuel type: Petrol
• Category: Coolant Hoses

Purpose and function in the cooling system

The presented water hose operates within the petrol engine cooling system, responsible for transporting coolant between individual components, such as the engine block, radiator, or intermediate elements. A correctly selected hose minimizes the risk of leaks, pressure drops, and localized overheating, which translates into a stable operating temperature for the power unit and longer component life.

For BMW 1 Series E81/E87 LCI (facelift) models, proper fitment of the hose geometry is crucial to avoid tension, rubbing against other engine bay components, or improper routing that could lead to premature wear or failure.

Construction and fitment for BMW E81/E87 LCI

The water pipe has been designed as an element compliant with BMW factory standards, which means maintaining the correct diameter, shape, and mounting points. As a result, installation is performed using existing brackets and routings, without the need for modifications or additional adapters.

Key functional features of this hose include:

• dedicated design for the cooling system in BMW cars with petrol engines,
• appropriately selected flexibility, allowing for the compensation of power unit vibrations,
• shape tailored to the engine bay architecture of E81/E87 LCI versions.

Condition, service application, and benefits of installation

The item comes from the Cooling system pipes and hoses group and is offered as a used part, which allows for economical repair while maintaining the manufacturer's original specifications. Replacing a worn or leaking hose with an original component of this type is particularly important in cars operated in varied temperature conditions, where the cooling system works under high load.

Selecting the correct water hose has a direct impact on:

• maintaining a stable operating temperature of the petrol engine,
• reducing the risk of overheating and damage to seals, the cylinder head, or accessories,
• seamless compatibility with other BMW cooling system components.

Technical support and selection by parameters

As an original BMW part, the water hose has an assigned OEM number and interchangeable numbers, which facilitates precise identification and selection for a specific engine version and vehicle year. In practice, this means the ability to directly compare it with the part removed from the car and verify compatibility in service catalogs.

For users planning comprehensive cooling system maintenance, it will also be useful to read the guide on diagnostics and operation of this system – a detailed discussion can be found in the article Engine cooling system – overheating, repair, and used radiators, which explains how to properly care for cooling in various models, including BMW.

Expanding BMW cooling system service

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

When planning broader service work on the car, it is also worth paying attention to the selection of other used components in accordance with OEM markings and manufacturer specifications – practical tips on selecting second-hand parts can be found in the guide Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?, which helps organize the approach to purchasing used parts for modern vehicles.