Mercedes W164 A207 Fuel Quanity Control Valve Regulator OM642 A6420740384

Mercedes W164 A207 Fuel Quantity Control Valve OM642 is an original component from the valves category, designed for precise fuel quantity control in the OM642 diesel engine. This used OEM component ensures proper operating parameters of the injection system, which translates to stable engine operation and predictable response to load.

Specifications and technical data

• SKU: A6420740384
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420740384
• Substitutable numbers: A6420740384, A 642 074 03 84, 0928400762, 0 928 400 762
• Category: Valves

Purpose and Function of the OM642 Fuel Quantity Control Valve

The presented valve belongs to the group of components responsible for accurate fuel metering in the diesel engine fuel supply system. In OM642 units, it is responsible for:

• stabilizing fuel pressure in the injection rail under various load conditions,
• precise control of the fuel quantity directed to the injectors,
• maintaining smooth engine operation at low and high RPMs.

Thanks to a properly functioning valve, the injection system maintains adequate dynamics, and the engine control unit can implement programmed injection strategies without undesirable deviations.

Benefits of Using an Original Mercedes Valve

Using an original fuel quantity control valve in the OM642 engine offers a range of practical operational benefits:

• Proper interaction with engine electronics – the component's parameters are matched to the control maps used in OM642 units.
• Reduced risk of diagnostic errors – correct fuel quantity regulation reduces the likelihood of errors related to common rail system pressure.
• Stable performance and operation – uniform fuel delivery promotes smooth acceleration and reduces idle speed fluctuations.
• Better fuel consumption control – proper quantity regulation helps maintain predictable fuel consumption in daily operation.

Characteristics of a Used Valve from the Valves Category

The offered component comes from the group of valves used in Mercedes injection systems. As a used part, it is an attractive alternative to new components, allowing for economical repairs while maintaining the original design specifications. This type of solution is particularly beneficial for:

• routine repairs on older vehicle models,
• restoring the injection system's functionality after a control valve failure,
• optimizing service costs while retaining OEM parts.

A used valve with preserved geometry and proper actuator operation allows for quick restoration of correct fuel quantity regulation without the need to interfere with other system components.

Application in the OM642 Engine and Installation Aspects

The Mercedes W164 A207 Fuel Quantity Control Valve OM642 is designed for operation in the fuel supply system of the OM642 diesel engine, where it works with the high-pressure pump and the common rail. When selecting and installing, it is worth paying attention to:

• compatibility with the engine unit – selecting the valve for a specific OM642 engine configuration,
• proper sealing of connections – using appropriate seals and tightening torques,
• cleanliness of the fuel system – installation in a contamination-free environment to avoid disrupting the control element's operation.

After installation, it is recommended to perform computer diagnostics to verify fuel pressure parameters and potential adaptation in the engine control unit, in accordance with service procedures.

More Valves for Mercedes and Technical Knowledge

If you are looking for other Mercedes valves for the fuel system or related applications, check out our dedicated category: Mercedes valves. There you will find a wide selection of components tailored to various models and engine configurations of this brand.

In the context of emission control and exhaust gas recirculation systems, it is also worth familiarizing yourself with the article discussing the specifics of EGR valves and their impact on diesel engine operation: EGR: what it is and why it's worth considering used EGR valves. This is a practical addition to your knowledge about components that work with the fuel supply and combustion control systems.