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

BMW E81 E87 LCI Radiator Water Hose Engine Cooling Pipe 116i N43 Petrol is an original engine cooling system component designed for the facelifted 1 Series models. This used water hose ensures a factory-fit for the N43 engine, facilitating easy installation and restoring proper coolant circulation. It is a practical solution for drivers looking for a proven OEM component at a reasonable price.

Specifications and technical data

• SKU: 7577964-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7577964
• Substitutable numbers: 17127577964, 7577964
• Fuel type: Petrol
• Category: Coolant Hoses

Purpose and function in the cooling system

The offered hose belongs to the Cooling system hoses and pipes category and is responsible for transporting coolant between system components in the N43 petrol engine. A correctly selected hose:

• maintains the tightness of the coolant circuit,
• ensures a stable operating temperature for the power unit,
• reduces the risk of overheating in both city and highway driving conditions,
• supports uniform heat dissipation from the engine block. Thanks to a design consistent with BMW's factory specifications, the hose maintains its proper shape under thermal and mechanical stress, which is particularly important in the tightly packed engine bay of the 1 Series.

Compatibility with the N43 petrol engine

The component has been designed to work with the N43 petrol engine in the BMW 116i E81/E87 LCI generation. This means:

• correct connector diameters matched to the stock fittings,
• proper hose routing in the engine bay,
• compatibility with the factory cooling system of the petrol unit. Selecting a hose dedicated to a specific fuel type reduces the risk of improper installation and leaks that could occur when using universal replacements.

Characteristics of the used component

The hose comes from a vehicle dismantling, which allows for maintaining the original geometry and material hardness intended by the manufacturer. A used component is a good solution when:

• you want to reduce the cost of cooling system repairs,
• you care about maintaining the factory hose routing,
• you avoid unverified replacements with uncertain specifications. Before installation, a standard visual inspection and replacement of the clamps are recommended to ensure full tightness after installation in the vehicle.

Technical support and additional materials

To better understand the impact of functional hoses and the entire cooling system on engine durability, it is worth checking out the guide on how the system works at high temperatures – you can find it in the article Summer heat vs. cooling system: used radiators and fans as a guarantee of savings. This is a practical addition to your knowledge when planning comprehensive cooling system maintenance. If you are planning a comprehensive repair or upgrade of the cooling system area in your BMW and need other components from the same group, such as additional water pipes, flexible return hoses, or sections connecting to the radiator, check out the available parts in the BMW cooling system hoses and pipes category.