BMW E81 E82 E86 E87 LCI E88 Fuel Injection Injector Unit N45 N46 Petrol 7561277

BMW E81 E82 E86 E87 LCI E88 Fuel Injector N45 N46 Petrol is an original fuel system component designed for BMW N45 and N46 petrol engines in the compact E81, E82, E86, E87 LCI, and E88 models. The precisely selected operating parameters of the injector support stable engine operation, uniform fuel delivery, and proper compatibility with the factory engine control unit. This is a practical solution for users who want to restore the correct operation of the injection system without altering the vehicle's original architecture.

Specifications and technical data

• SKU: 7561277
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7561277
• Substitutable numbers: 7561277, 13537561277
• Fuel type: Petrol
• Part type: Fuel Valve
• Category: Additional Fuel Injection Parts

Purpose and Role of the Injector in N45/N46 Engines

The presented fuel injector operates within the petrol fuel system, responsible for precise fuel atomization in the intake manifold or directly into the combustion chamber – in accordance with the control characteristics used in N45/N46 engines. A properly functioning component of this type influences:

• stable idle speed and smooth acceleration,
• uniform operation of all cylinders,
• maintenance of the correct fuel-air mixture composition,
• reduction of excessive fuel consumption and exhaust emissions.

By maintaining the factory flow characteristics, the petrol injector dedicated to BMW E81–E88 ensures compatibility with the injection maps stored in the engine control unit, which is particularly important for diagnostics and subsequent operation.

Benefits of Using an Original BMW Injector

Choosing an original injector from the Other Injection System Parts group ensures that the parameters specified by the vehicle manufacturer are maintained. In practice, this means:

• secure geometric fit into the cylinder head and manifold seats,
• electrical compatibility with the engine wiring harness,
• correct interaction with sensors and the mixture control system.

This solution simplifies servicing, reduces installation time, and minimizes the risk of adaptation issues that can occur when using aftermarket parts with different flow characteristics.

Performance Characteristics and Installation

The fuel injector in this BMW model is a component operating under demanding temperature and pressure conditions, therefore its correct selection directly impacts the durability of the engine. Using the appropriate component helps minimize the risk of:

• misfires on individual cylinders,
• excessive fouling of spark plugs,
• local overheating resulting from uneven mixture.

The component is designed for installation in factory mounting points, which facilitates the mechanic's work and allows for the preservation of the original routing of fuel lines and electrical wiring. The petrol injection system, after replacement with a functional injector, can regain stable operation, which is noticeable both during cold starts and during dynamic acceleration.

Component Condition and Economic Aspects

The offered fuel injector is a used component, which significantly reduces the repair cost compared to purchasing a new part, while maintaining the original manufacturer's specifications. This is a particularly beneficial solution for comprehensive servicing of multiple cylinders simultaneously, when more than one injection system component is being replaced.

If you are considering whether a new component or a tested used part would be a better choice for your situation, the article comparing both options – New or Used? A Comparison of Car Part Costs and Quality – may be helpful. You will find practical tips on selecting components, including fuel system parts.

Expanding the BMW Injection System

If you are planning a comprehensive repair or modernization of the engine area in your BMW and need other parts from the same group, such as additional injectors, fuel rails, or small mounting accessories, check the available parts in the Other BMW Injection System Parts category.