BMW E90 E91 E92 E93 M57N2 Gearbox Cooling Pipe Oil Pipe Inlet Tube Line 8509708

BMW E90 E91 E92 E93 M57N2 Gearbox Cooling Pipe Oil Pipe Inlet Tube Line is an original oil cooling system component designed for BMW 3 Series models with the M57N2 engine. This used part from the Oil coolers and lines category allows for the restoration of proper gearbox oil circulation and stable drivetrain operating temperatures. It is a practical solution for users seeking a factory-fit replacement without the need for aftermarket alternatives.

Specifications and technical data

• SKU: 8509708
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8509708
• Substitutable numbers: 8509708, 17228509708, 7800494, 17227800494, 7804147, 17227804147, 7789598, 17227789598
• Category: Oil Coolers & Lines

Purpose and function of the oil cooling pipe

This oil pipe is responsible for delivering gearbox oil to the cooler, which enables effective heat dissipation from the drivetrain. In BMW E90, E91, E92, and E93 models with the M57N2 unit, stable oil temperature is crucial for gearbox longevity, smooth gear shifting, and the protection of friction components.

Thanks to its factory geometry and precisely selected internal diameter, the pipe ensures proper oil flow, minimizing pressure drops and the risk of overheating. Correct routing of the pipe in the engine bay also reduces the possibility of chafing and leaks during operation.

Benefits of using an original BMW pipe

Using an original oil cooling pipe in a BMW 3 Series with an M57N2 engine provides:

• Factory fitment for the gearbox oil cooling system, with no modifications required.
• Appropriate pipe rigidity and flexibility, which facilitates installation at original mounting points.
• Compatibility with factory connectors and seals, reducing the risk of oil leaks.
• Flow parameters consistent with the manufacturer's specifications, supporting stable gearbox operation.

For users who want to maintain the integrity of the drivetrain, choosing an original BMW oil cooling pipe is a technically safe and predictable solution for vehicle maintenance.

Part condition and installation aspects

The offered pipe comes from disassembly and is a used component, which allows for economical repair while maintaining the original manufacturer's specifications. Before installation, a standard visual inspection for any signs of mechanical damage is recommended, as well as checking the connection ports and sealing surfaces.

The pipe is designed for installation in place of the factory component, so the process is similar to plug-and-play, utilizing original mounting points and brackets. Proper routing of the pipe in the engine bay is important for thermal safety and protection against vibrations.

Oil cooling system optimization and additional materials

A functional gearbox oil cooling pipe is an essential element of the entire drivetrain cooling system, influencing operating temperature stability and component protection. If you want to better understand how the cooling system and oil coolers affect the durability of the powertrain, it is worth reading the article: Engine cooling system – overheating, repair, and used radiators.

When planning seasonal inspections, especially before the winter period, a comprehensive check of components responsible for fluid circulation is a good solution. A helpful guide for preparing a checklist of tasks can be found here: Winter essentials: which used car parts are worth checking and replacing before the frost?.

Related BMW oil cooling system components

If you are planning a comprehensive repair or upgrade of the oil cooling area in your BMW and need other components from the same group, such as return lines, additional oil pipe sections, or oil cooler connection elements, check the available parts in the BMW oil coolers and lines category.