Ford Mondeo Focus Connect 1.8 TDCi Diesel Fuel Injector Rail Line 4M5Q-9D280-DB

The Ford Mondeo Connect 1.8 TDCi Fuel Rail is a precise component of the diesel engine fuel system, designed for use in Ford diesel units. It is responsible for the stable distribution of fuel to the injectors, which is crucial for engine smoothness, dynamics, and fuel economy.

Specifications and technical data

• SKU: 4M5Q-9D280-DB
• Mark: Ford
• Condition: Used
• OEM Part Number: 4M5Q-9D280-DB
• Substitutable numbers: 4M5Q9D280DB, 4M5Q-9D280-DB, 1445928
• Fuel type: Diesel
• Color: Deep Blue Metallic - B69
• Category: Fuel Injectors

Purpose and Role in the Injection System

The fuel rail in the 1.8 TDCi engine functions as a high-pressure fuel distributor to individual injectors. A properly selected component ensures:

• stable fuel pressure across the entire engine speed range,
• even fueling of all cylinders, leading to smoother engine operation,
• better throttle response and correct interaction with the engine control electronics.

For TDCi diesel engines, a correctly functioning fuel rail is key to maintaining proper combustion parameters and reducing smoke, vibrations, and power loss.

Technical Characteristics and Compatibility

The presented fuel rail is a component from the Injector Nozzles category, intended for diesel fuel systems. Its construction is adapted for high operating pressures typical of modern diesel engines, maintaining the appropriate rigidity and sealing of the entire distributor.

The Deep Blue Metallic - B69 finish color facilitates visual identification of the component in the engine bay and can be helpful when comparing it with the currently installed rail. The product comes from the Ford brand, which promotes proper integration with factory design solutions and operating parameters of the 1.8 TDCi unit.

Component Condition and Practical Application

The fuel rail is offered as a used part, allowing for economical repair of the fuel system while maintaining the original manufacturer's specifications. This type of solution is particularly beneficial for intensively used vehicles where a reasonable service cost is important while maintaining correct engine operating parameters.

Replacing the fuel rail is recommended, among other things, when there are problems with maintaining fuel pressure, uneven idling, starting difficulties, or errors recorded in the control unit related to the injection system. A properly selected distributor helps restore the correct operation of the entire common rail system.

Benefits of Using the Correct Fuel Rail

• Improved engine stability – even fueling of injectors reduces vibrations and RPM fluctuations.
• Better combustion quality – proper fuel pressure promotes more complete mixture combustion, which can reduce smoke.
• Support for diagnostics and service – using a rail that matches factory specifications simplifies the work of mechanics and reduces the risk of compatibility issues.
• Cost-effective repairs – a used original part is often a favorable compromise between price and performance parameters.

Injection System Diagnostics and Technical Knowledge

When experiencing problems with diesel engine operation, it is advisable to perform comprehensive diagnostics of the entire fuel system, including both the fuel rail and the injectors themselves. A detailed discussion of typical symptoms and the consequences of neglect can be found in the article: Diesel Injector Failures – How to Recognize Them and What Their Neglect Entails. This is a practical source of knowledge that helps to better understand the relationships between individual components of the common rail system.

Related Products and System Expansion

If you are looking for other components from the Ford Injector Nozzles category, check out the Ford Injector Nozzles available in our store to approach fuel system servicing comprehensively and select components tailored to your TDCi engine.