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

BMW E60 E61 LCI 520d N47 Oil Cooler Pipe Hose Inlet are original components from the Oil coolers and hoses group, designed for automatic transmission systems in vehicles with the N47 diesel engine. They ensure stable transmission fluid routing, supporting proper cooling and reliable operation of the transmission in facelifted BMW 5 Series models.

Specifications and technical data

• SKU: 7799752
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7799752
• Substitutable numbers: 17227799752, 7799752
• Fuel type: Diesel
• Category: Engine Oil Coolers & Lines

Purpose and function in the drivetrain

The transmission oil hoses in BMWs with the N47 engine are responsible for the safe transport of oil between the transmission and the heat exchanger or oil cooler. In Diesel units, thermal loads are significantly higher, which is why efficient hoses are crucial for maintaining a stable transmission fluid temperature and protecting the internal components of the gearbox.

Using original hoses in the transmission oil cooling system reduces the risk of leaks, pressure drops, and overheating, which in the long run translates into the durability of the automatic transmission and comfort of gear shifting.

Benefits of using original oil hoses

Compared to aftermarket replacements, the original transmission oil hoses for the BMW E60/E61 LCI with the N47 engine offer:

• precise fitment to the factory routing in the engine bay,
• maintenance of the correct oil flow diameter,
• compatibility with factory quick-connectors and mounts,
• stable operation of the oil cooling system under typical road and highway conditions.

Thanks to this, installation is straightforward, without the need for modifications, and the transmission lubrication and cooling system maintains factory-like parameters. This is particularly important in vehicles with diesel engines, where thermal loads and torque are higher than in many gasoline units.

Condition, origin, and service application

The offered hoses come from a dismantled BMW vehicle and are used parts, which allows for an economical yet technically sound repair of the transmission oil cooling system. This type of part is particularly useful for:

• mechanical damage to the hoses (cracks, abrasions, corrosion of connectors),
• transmission fluid leaks near the oil cooler or transmission,
• comprehensive transmission service combined with oil and filter changes.

Selecting hoses compatible with the specific N47 engine version and E60/E61 LCI body is essential for proper oil line routing and avoiding interference with other engine accessories.

Technical support and additional information

When working with the transmission oil cooling system, it is worth understanding the relationship between oil temperature, engine load, and component durability. An extended discussion on the impact of oil coolers and hoses on the service life of the powertrain can be found in the article Engine cooling system – overheating, repair, and used radiators, which covers practical aspects of operation and service.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your BMW and need other components from the same group, such as oil hoses, oil coolers, or additional connectors, check out the available parts in the BMW oil coolers and hoses category.

Summary

BMW E60 E61 LCI 520d N47 Oil Cooler Pipe Hose Inlet is the right choice for users who want to restore proper circulation and cooling of the transmission fluid in an automatic gearbox in a diesel-powered car. The original design, fitment to the specific model configuration, and suitability for professional service or DIY repair make this a technically safe and functional solution for daily use.