Mini Cooper D R50 Pressure Hose Assy Pipe Fuel Injector 7791114

The Mini Cooper D R50 fuel injection high-pressure line is an original fuel system component responsible for precisely delivering fuel to the injector. Designed by Mini for stable diesel engine operation, it ensures proper working pressure and safe operation of the entire injection system.

Specifications and technical data

• SKU: 7791114
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7791114
• Substitutable numbers: 13537791114, 7791114
• Category: Fuel Injectors

Purpose and Function in the Injection System

The injector pressure line for Mini Cooper D R50 operates at a critical point in the fuel system, connecting the common rail to the injector nozzle. It is responsible for:

• stable delivery of fuel under high pressure to the injector,
• maintaining system seal under high load conditions,
• reducing vibrations and pressure pulsations, which contributes to smooth engine operation.

A correctly selected pressure line is crucial for proper fuel metering, combustion quality, and the overall refinement of the engine's operation.

Original Origin and Compatibility

This component comes from the Mini OE line, meaning it is factory-fitted for the injection system in the Mini Cooper D R50. Thanks to this:

• the geometry and length of the line comply with the vehicle manufacturer's requirements,
• the connection points match the original sockets on the rail and injector,
• the stiffness and flexibility of the line are tailored to the characteristics of diesel engine operation.

Original manufacturing minimizes the risk of leaks, improper line routing in the engine bay, and unwanted stresses during engine operation.

Component Condition and Installation Aspects

The line is offered as a used part, allowing for an economical repair of the injection system while maintaining the original manufacturer's specifications. Before installation, it is recommended to:

• inspect the surface of the cones and sockets for mechanical damage,
• thoroughly clean the connection areas of dirt and fuel residue,
• apply the correct tightening torque according to Mini's service documentation.

A correctly installed pressure line minimizes the risk of leaks, pressure drops, and problems with engine starting and operation.

Importance for Diagnostics and Injection System Durability

A damaged or leaking injector line can cause symptoms that are difficult to diagnose, such as loss of power, smoke, or uneven engine operation. Replacing it with a functional OEM part is one of the fundamental steps in comprehensive injection system maintenance. If you want to better understand the relationship between lines and injector performance, it is worth reading the article Diesel Injector Faults – How to Recognize Them and What Neglecting Them Entails, which discusses the symptoms and consequences of improper injector operation.

Other Mini Injector Nozzles

If you are assembling the fuel system or planning a more extensive injector overhaul, you may also need other components from the same group. Check the available Mini injector nozzles to select compatible components for your engine and maintain the integrity of the entire system.