BMW Mini Cooper R55 R56 LCI Diesel Injection Pressure Hose Line Assy 7804976

The MINI Cooper R56 D Fuel Pressure Hose is a component of the diesel fuel supply system, designed for diesel engines in the MINI Cooper R56 D model. It ensures stable, leak-free, and safe delivery of pressurized fuel to the injection system, which translates to proper engine operation.

Specifications and technical data

• SKU: 7804976
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7804976
• Substitutable numbers: 13537804976, 7804976
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and Role in the Injection System

The flexible pressure hose operates within a diesel fuel supply system, where maintaining correct fuel pressure and connection integrity is crucial. This component works in conjunction with injector nozzles, ensuring uniform delivery of diesel fuel to the combustion chamber.

In MINI Cooper R56 D diesel engines, the proper condition of pressure hoses directly impacts:

• stable injector operation across the full load range,
• maintaining correct fuel pressure in the fuel rail and at the injectors,
• reducing the risk of leaks and power loss,
• precise fuel metering, contributing to lower consumption and smoother engine operation.

Construction and Performance Characteristics

The flexible design of the hose facilitates routing within the engine bay, allowing for engine vibration compensation and minor movements of ancillary components. This results in:

• reduced stress on injector connectors and spigots,
• minimized risk of micro-cracks caused by operation in varying thermal conditions,
• maintained system flexibility while ensuring required sealing.

The hose is designed for operation in a diesel fuel environment, meaning its material is resistant to typical chemical and thermal stresses encountered in diesel engines.

Integration with the Injector Nozzle System

As a component within the injector nozzles category, the MINI Cooper R56 D flexible pressure hose forms part of the complete injector supply path. A correctly selected hose:

• ensures compatibility with the injection system geometry of the specific engine,
• simplifies installation and removal during injector servicing,
• stabilizes the operation of the entire supply system, which is important for diagnostics and adjustments.

Replacing a worn or leaking hose with a functional part is one of the fundamental steps in resolving injection problems in MINI diesel engines.

Product Condition and Service Application

The offered hose is a used part, making it an attractive solution for users seeking economical repairs while maintaining compliance with factory specifications. Such components are commonly used in:

• routine repairs of the injection system in daily-driven vehicles,
• fleet maintenance, where cost-effective diesel upkeep is a priority,
• comparative diagnostics – as a replacement part for verifying fuel pressure-related faults.

Technical Support and Diesel System Knowledge

When working with the injection system, it's beneficial to be aware of common signs of wear. If you want to better understand how a pressure hose interacts with injectors and what symptoms might indicate fuel supply issues, check out the article: Diesel Injector Faults – How to Recognize Them and the Dangers of Neglect. This provides practical knowledge to complement your repair plans for the MINI Cooper R56 D.

If you are looking for other MINI injector nozzles for your car, explore the MINI injector nozzles available in our store to select parts that match your specific engine version and planned service work.