BMW X3 E46 E60 E61 E65 E83 M54 Fuel Injector Rail With Injectors 7541452

BMW X3 E46 E60 E61 E65 E83 M54 Fuel Rail 7541452 is an original fuel supply system component designed for BMW M54 gasoline engines in selected 3 Series, 5 Series, 7 Series, and X3 models. The rail ensures stable fuel delivery to the injectors, which translates to predictable engine operation and proper response to load.

Specifications and technical data

• SKU: 7541452-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7541452
• Substitutable numbers: 13537541452, 7541452, 13531437442, 1437442
• Category: Fuel Injectors

Purpose and Role in the Fuel System

The fuel rail in an M54 engine is responsible for the even distribution of fuel to individual injector nozzles. A correctly selected rail limits pressure drops, stabilizes injector operation, and helps maintain the correct fuel-air mixture across the entire RPM range.

The component is dedicated to M54 units used in, among others, BMW 3 Series, 5 Series, 7 Series, and the X3 model, allowing for the preservation of factory engine characteristics and compatibility with original equipment.

Construction and Compatibility with Injector Nozzles

The rail is designed as an OEM component of the "Injector Nozzles" system, thus maintaining the correct geometry of the seats and mounting points. Proper fuel channel routing and precise injector positioning reduce the risk of leaks and facilitate installation in the engine bay.

• Stable seating of injector nozzles – proper support and guidance of injectors in the cylinder head.
• Optimal fuel flow – design adapted to the M54 engine characteristics.
• Factory mounting points – facilitate installation and maintain original wiring routing.

Condition, Origin, and Benefits of Choosing a Used Part

The offered BMW fuel rail comes from a dismantled vehicle and is in used condition, meaning it is an original part previously operated in a vehicle. For many users and workshops, choosing such a part is a sensible compromise between cost and maintaining factory quality of workmanship.

If you are undecided between refurbishment and installing an original dismantled part, it is worth familiarizing yourself with the practical tips described in the article Refurbished or Used Original – Which Part to Choose for Repairs, which discusses typical repair scenarios and the cost-effectiveness of individual solutions.

Fuel Injection System Diagnostics and Technical Knowledge

A properly functioning fuel rail, working in conjunction with injector nozzles, significantly impacts engine smoothness, fuel consumption, and emissions. Any fuel supply problems – such as uneven running, power loss, or starting difficulties – require thorough diagnostics of the entire system.

To better understand the symptoms and consequences of diesel injector failures and the importance of correct fuel pressure, it is worth referring to the guide Diesel Injector Failures – How to Recognize Them and What Neglecting Them Entails. Although it concerns diesel engines, the diagnostic principles and service approaches described there are also helpful when analyzing the operation of fuel injection systems in gasoline engines.

Related BMW Injector Nozzles

If you plan to replace the entire fuel supply line as part of your service, it is also worth considering selecting compatible BMW injector nozzles. Our assortment includes other elements from the same group, making it easier to assemble a repair kit for a specific engine and model.

Looking for other BMW injector nozzles compatible with your model? Check out the available BMW injector nozzles to select the appropriate components for your planned service work.