Skoda Octavia Mk3 5E Fuel Injection Rail 1.6 TDCI CXXB Diesel Engine 04L130089F

Skoda Octavia Mk3 5E Fuel Injection Rail 1.6 TDCI CXXB Diesel Engine is a fuel system component designed for diesel engines, responsible for the stable distribution of fuel to the injectors. Thanks to its precise design, it ensures uniform pressure in the common rail, which translates into smooth engine operation and correct combustion characteristics. It is a practical solution for users looking for a proven component for their car's fuel injection system.

Specifications and technical data

• SKU: 04L130089F-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 04L130089F
• Substitutable numbers: 04L130089F, 04L 130 089 F
• Fuel type: Diesel
• Part type: Fuel Injector
• Category: Fuel Injectors

Purpose and function in the fuel injection system

The described fuel injection rail operates in a Diesel engine, where it plays a key role in distributing fuel to individual injectors. Maintaining appropriate pressure parameters in the rail is essential for:

• correct fuel dosing across the entire RPM range,
• stable engine operation under load,
• reducing smoke emissions and improving engine refinement,
• maintaining factory performance and torque characteristics.

A properly selected fuel injection rail also supports the operation of the engine control unit, which regulates the fuel dose and injection timing based on signals from sensors.

Technical characteristics and compatibility

The product belongs to the Injector Nozzles group, meaning it is a component that works directly with the precision fuel supply system. The rail's design is adapted to the requirements of modern diesel units, where the following are crucial:

• resistance to high operating pressures in the common rail system,
• stability of operating parameters over a wide temperature range,
• compliance with the factory fuel system architecture.

By maintaining the original geometry and mounting points, the rail allows for installation in place of the factory component without the need for modifications to the fuel system or engine accessories.

Condition, origin, and benefits of use

The rail comes from the Audi brand and is a secondary market component, which allows for a balance between reasonable cost and maintaining proper performance parameters. A used component of this type is an attractive solution in situations where:

• a quick replacement of a damaged fuel injection rail is necessary,
• maintaining compliance with the factory system specification is important,
• the ability to match existing injectors and accessories is essential.

Using an original fuel injection rail helps reduce the risk of starting problems, power drops, or uneven engine operation resulting from incorrect fuel pressure.

Diagnostics and operation of the fuel injection system

When replacing the fuel injection rail, it is worth paying attention to the general condition of the fuel supply system, including injectors, high-pressure lines, and the fuel filter. Symptoms such as difficulty starting, jerking during acceleration, or increased fuel consumption may indicate the need for comprehensive diagnostics. To better understand the symptoms of fuel injection system component wear, the article Diesel injector faults – how to recognize them and the risks of neglecting them, which discusses typical symptoms and methods for verifying component condition, will be helpful.

Expanding the fuel system and selecting related components

If you are planning a comprehensive repair or upgrade of the fuel system area in your Audi and need other elements from the same group, such as rails, lines, or components working with injectors, check the available parts in the Audi Injector Nozzles category.

For users interested in a broader approach to selecting secondary market components, the guide The best used car parts – a guide to the most frequently chosen original parts, which discusses practical aspects of choosing used components for popular car models, may also be useful.