BMW F10 F12 F07 GT Petrol N63 Turbocharger Coolant Feed Pipe Cyl. 1-4 7578687

The BMW F10 F12 F13 Gasoline N63 Turbocharger Water Supply Hose Cyl 1-4 is an original cooling system component designed for N63 gasoline engines in BMW F-series models. This specialized hose is responsible for the stable water supply to the turbocharger for cylinders 1–4, which is crucial for the durability of the auxiliary equipment and the thermal safety of the powertrain. A used OEM component is a sensible choice for a technically informed repair aimed at preserving factory operating parameters.

Specifications and technical data

• SKU: 7578687
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7578687
• Substitutable numbers: 7578687, 11537578687
• Fuel type: Petrol
• Category: Coolant Hoses

Turbocharger Water Supply Hose Function

In the N63 gasoline engine, the turbocharger water supply hose controls the flow of coolant between the cooling system and the turbocharger housing serving cylinders 1–4. A correctly selected and sealed hose:

• stabilizes the turbocharger housing temperature under engine load,
• reduces the risk of overheating of bearings and seals,
• supports uniform cooling within the cylinder bank 1–4,
• ensures predictable operating conditions for the entire boost system.

Thanks to this, the turbocharger cooling system maintains the characteristic performance designed by BMW, which translates into engine smoothness and its long-term reliability.

Designed for the N63 Gasoline Engine

This component has been designed with the specific characteristics of the N63 gasoline unit in mind, where high power density and high exhaust gas temperatures require efficient heat dissipation from the turbochargers. Using a hose dedicated to this type of engine:

• facilitates maintaining the factory routing geometry of hoses in the engine bay,
• minimizes stresses resulting from vibrations and temperature changes,
• reduces the risk of collision with other auxiliary components.

Selecting a hose that matches the N63 design is particularly important during intensive use, when the cooling system operates under increased load ranges.

Benefits of Using an Original BMW Hose

Using an original hose from the Cooling System Hoses and Pipes group to replace a worn or non-factory part helps maintain the integrity of the entire system. In practice, this means:

• secure fit to the connectors and mounting points on the turbocharger and engine block,
• preservation of the designed coolant flow cross-section,
• easier installation without the need for modifications or shape adjustments.

For owners who wish to keep their BMW F10, F12, or F13 in a technical condition close to factory specifications, choosing an original hose is a solution consistent with the manufacturer's intentions and promotes predictable service costs in the long run.

Characteristics of the Used Component

The offered hose is a used component, allowing for an economical restoration of the turbocharger cooling system's functionality while maintaining the original BMW specifications. This type of component is particularly attractive in situations where:

• a quick replacement of a damaged hose is necessary while maintaining compliance with the factory design,
• cost optimization of the repair is important without compromising on OEM parts,
• preserving the original routing of hoses in the engine bay is desired.

Choosing a used turbocharger water supply hose is a sensible compromise between quality and cost, especially for advanced gasoline engines like the N63.

Technical Support and Additional Materials

During the summer, the gasoline engine's cooling system operates under particularly demanding conditions, so it is worth expanding your knowledge about its operation. Practical tips on the impact of high temperatures on cooling and ways to save money by using used components can be found in the article Summer Heat vs. Cooling System: Used Radiators and Fans Guarantee Savings.

If you are planning a comprehensive repair or upgrade of the cooling system area in your BMW and need other parts from the same group, such as pipes, hoses, or coolant connectors, check the available parts in the BMW Cooling System Hoses and Pipes category.