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Oil Cooling Line BMW F10 F11 M550dX X5 F15 M50dX Automatic Gearbox Hoses 7823999
SKU: 7823998
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Used
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The BMW F10 F11 M550dX X5 F15 M50dX Gearbox Oil Cooler Hose is an original part from the Oil Coolers and Hoses group, designed for automatic transmission systems in BMW diesel vehicles. Engineered for demanding Diesel units, it ensures stable heat dissipation from the transmission fluid and supports the safe operation of the xDrive drivetrain.
Specifications and technical data
- SKU: 7823998
- Mark: BMW (Genuine OE)
- Condition: Used
- OEM Part Number: 7823998
- Substitutable numbers: 7823998, 17227823998, 7823999, 17227823999
- Fuel type: Diesel
- Gearbox type: Automatic
- Category: Oil Coolers & Lines
Purpose and Role in the Gearbox Oil Cooling System
The gearbox oil cooler hose in BMW F10, F11 M550dX, and X5 F15 M50dX models is responsible for transporting transmission fluid between the automatic gearbox and the heat exchanger. Proper flow of the working medium limits overheating, stabilizes operating temperature, and contributes to smooth gear changes in the automatic transmission.
In vehicles with diesel engines, which generate high torque, the thermal load on the gearbox is significantly greater. An efficient oil cooler hose:
- maintains adequate pressure in the transmission fluid circuit,
- supports the protection of friction elements and control hydraulics,
- reduces the risk of slippage and jerking during gear changes,
- indirectly extends the lifespan of the automatic gearbox.
Benefits of Using an Original BMW Hose
Using a gearbox oil cooler hose specifically designed for the BMW F10, F11 M550dX, and X5 F15 M50dX versions ensures the preservation of factory routing geometry and proper connection fit. The original design provides:
- compatibility with the mounting system and brackets in the body,
- an appropriately selected internal diameter for the oil pump's performance,
- proper resistance to operating temperature and pressure,
- compatibility with oils used in BMW automatic transmissions.
As a result, the hose operates stably in both urban conditions and during long-distance highway driving, where the drivetrain's thermal load is particularly high.
Operating Characteristics in Diesel + Automatic Transmission Configurations
In configurations with a Diesel engine and an automatic gearbox, maintaining a consistent transmission fluid temperature is crucial. The gearbox oil cooler hose in this application:
- ensures stable oil flow under high engine torque,
- limits cooling system performance drops during intense acceleration,
- supports the smooth operation of the gearbox's hydraulic and electronic control.
This solution is particularly important in powerful M550dX and M50dX versions, where the drivetrain operates under heavy load, and the thermal safety margin directly impacts component durability.
Condition, Installation, and Service Aspects
This part comes from the used BMW parts segment, allowing for an economical repair of the gearbox oil cooling system while maintaining the original manufacturer's specifications. Hose replacement is recommended in situations where oil leaks, corrosion marks on connectors, or mechanical damage to protective covers and flexible sections are present.
During installation, pay attention to:
- correct routing of the hose relative to body and drivetrain components,
- checking the tightness of connections after the gearbox has reached operating temperature for the first time,
- the condition of other components in the oil cooling system, such as the heat exchanger or hose mounts.
Expanding the BMW Oil Cooling System
If you are planning a comprehensive repair or upgrade of the gearbox oil cooling system in your BMW and require other parts from the same group, such as additional hoses, flexible sections, or oil supply components to the heat exchanger, check the available parts in the BMW Oil Coolers and Hoses category.
In the context of high-temperature operation, it is also worth considering the overall condition of the vehicle's cooling system. Practical tips on the impact of summer heat on cooling and ways to operate economically using used components can be found in the article “Summer Heat vs. Cooling System: Used Radiators and Fans Guarantee Savings”.
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Will usually dispatch within same working day if paid before 14:00 BST (excludes weekends and holidays). Expected dispatch time may vary and is based on sellers order cut-off time.
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