BMW 5 Series E60 E61 LCI 520d N47 Oil Cooler Inlet Pipe Hose Line 7799752

BMW 5 Series E60 E61 LCI 520d N47 Oil Cooler Inlet Pipe Hose Line is an original lubrication system component that ensures a stable supply to the oil cooler in the N47 engine. Thanks to its factory-spec geometry and proper routing, the hose maintains correct fluid flow, which promotes safe engine operation and reduces the risk of oil overheating during daily use.

Specifications and technical data

• SKU: 7799752-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7799752
• Substitutable numbers: 17227799752, 7799752, BG
• Category: Power Steering Pumps

Purpose and function in the lubrication system

This component is designed for BMW 5 Series E60/E61 LCI models with the N47 520d engine, where it is responsible for delivering engine oil to the oil cooler. A properly functioning inlet hose:

• stabilizes oil pressure at the cooler inlet,
• ensures adequate flow under various engine loads,
• limits temperature fluctuations outside of the specified ranges,
• minimizes the risk of leaks in the critical area between the engine block and the oil cooler.

As a result, the lubrication system maintains its proper parameters, which translates into the durability of moving engine parts and stable operation of the unit in both city and highway driving conditions.

Construction, fitment, and installation

The oil cooler inlet hose is a component with a precisely defined shape, adapted for installation within the N47 engine bay. A properly routed oil line:

• bypasses critical structural points and hot components,
• ensures correct positioning without tension or twisting,
• facilitates installation at factory mounting points.

By maintaining the original geometry, the hose works with factory connectors and seals, allowing for efficient replacement during standard service procedures without the need for system modifications.

Benefits of using an original oil hose

Using an original oil cooler inlet hose in a BMW 520d N47 allows for the preservation of parameters specified by the vehicle manufacturer. In practice, this means:

• maintaining the designed oil flow and cooling characteristics,
• compatibility with the factory mounting system and hose routing,
• reduced risk of leaks compared to aftermarket replacements with uncertain fitment,
• easier diagnostics and future service maintenance.

This solution is particularly recommended when replacing worn or leaking hoses, especially if you want to maintain the factory reliability of the lubrication system and predictable engine performance over the long term.

Condition and service application

The offered oil cooler inlet hose is categorized under Power steering pumps in the catalog; however, its actual function relates to the engine oil lubrication and cooling system. As a used part, it is particularly suitable for:

• routine repairs after identifying an oil leak near the cooler,
• comprehensive work on the N47 engine when the hose shows signs of wear,
• restoring the original configuration after previous modifications to the oil system.

Selecting the component based on the vehicle manufacturer's markings facilitates matching it to a specific BMW 5 Series version, which reduces the risk of installation errors and speeds up workshop tasks.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as hoses, pumps, or complete hydraulic systems, check out the available parts in the BMW Power steering pumps category.

Selection by part numbers and technical support

When selecting an oil cooler inlet hose for a BMW 520d N47, it is crucial to compare the part number and interchangeable numbers with the vehicle documentation or the existing component. In case of doubt, it is worth using the VIN and the manufacturer's catalog to ensure that the hose will be fully compatible with the specific engine configuration and model year.

To better understand the relationships between individual components of the fuel supply and lubrication systems and to correctly select parts by OEM numbers, the guide article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which discusses practical principles of diagnostics, selection, and operation of components working with the engine, may be helpful.