Audi RS3 8V RSQ3 F3 Fuel Injection Rail Ramp Line Petrol 2.5 TFSI 07K133317AB

Audi RS3 8V RSQ3 F3 Fuel Injection Rail Ramp Line Petrol 2.5 TFSI 07K133317AB is an original fuel system component designed for 2.5 TFSI petrol engines in Audi RS3 8V and RSQ3 F3 sports models. The fuel rail is responsible for the stable distribution of fuel to the injectors, which translates into precise mixture dosing and consistent engine performance. This solution is particularly valued for dynamic driving and engine modifications.

Specifications and technical data

• SKU: 07K133317AB-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 07K133317AB
• Substitutable numbers: 07K133317AB, 07K 133 317 AB
• Fuel type: Petrol
• Part type: Fuel Rail (Ramp)
• Category: Additional Fuel Injection Parts

Purpose and role in the injection system

The fuel rail in the 2.5 TFSI engine plays a key role in the petrol supply system – it maintains the correct fuel pressure and distributes it evenly to individual cylinders. In high-power units such as the RS3 and RSQ3, the stability of the fuel rail has a direct impact on:

• proper air-fuel mixture formation,
• ignition consistency at high RPMs,
• engine refinement across the full load range,
• safe operation during potential power tuning.

Thanks to a design adapted for petrol engines, the fuel rail provides adequate flow reserve, which is important both in stock configurations and with moderate modifications.

Benefits of using an original fuel rail

Using a factory fuel rail in an Audi RS3 8V or RSQ3 F3 allows you to maintain the operating parameters specified by the vehicle manufacturer. In practice, this means:

• guaranteed compatibility with the stock injection system and engine control unit,
• correct geometric fit to the cylinder head and accessories,
• preservation of factory fuel supply characteristics under high load,
• reduced risk of leaks compared to generic aftermarket replacements.

For users who drive their car dynamically or plan modifications, a functional fuel rail is one of the elements that influence engine safety and performance stability.

Application in tuning and engine modifications

The 2.5 TFSI engine in the RS3 and RSQ3 is often chosen as a base for tuning, both software and mechanical. In such a scenario, the condition of the injection system is of particular importance. A properly selected fuel rail helps to:

• maintain adequate fuel supply at increased boost levels,
• minimize fuel pressure drops during rapid acceleration,
• ensure repeatable results during dyno tuning,
• reduce the risk of a lean mixture at high RPMs.

If you are considering increasing the power in your RS3 or RSQ3, it is worth first ensuring the condition of components such as the fuel rail, injectors, high-pressure fuel pump, and control accessories.

To better plan your modifications, you can use the practical tips included in the article How to increase engine power: a practical guide to engine tuning with used parts, where a safe approach to tuning using proven components is discussed step by step.

Product characteristics and fitment

The presented fuel rail belongs to the Other injection system parts group, which means it works with other fuel supply elements in the petrol engine. This part is intended for petrol-powered units, which is important when selecting components for vehicles that have different powertrain variants.

Before purchasing, it is worth verifying compatibility with the specific engine version and vehicle year using the OEM part number and interchangeable numbers available in the technical specification. This approach helps avoid installation problems and ensures that the fuel rail will work correctly with the existing system.

Support with selection and additional materials

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as fuel lines, mounting elements, or additional fuel system components, check out the available parts in the Other Audi injection system parts category.

When designing more extensive modifications, it is also worth reading the material describing the selection of used tuning components – you will find practical tips in the article The best used parts for tuning your car, which helps you consciously choose injection system and engine accessory components.