Fuel Pump Mercedes ML W166 GLE C292 Diesel OM651 OM642 Tank Pump A1664702594

Fuel Pump Mercedes ML W166 GLE C292 Diesel Tank Pump is an original fuel system component designed for Mercedes OM651 and OM642 diesel engines. As part of the Fuel pumps and level sensors group, it is responsible for the stable delivery of diesel fuel from the tank, which translates into smooth engine operation and proper interaction with the injection system. This used OEM component is a sensible choice for professional repair or maintenance of the fuel system in modern Mercedes SUVs.

Specifications and technical data

• SKU: A1664702594
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1664702594
• Substitutable numbers: A1664702594, A 166 470 25 94
• Fuel type: Diesel
• Category: Fuel Pumps & Sending Units

Purpose and function in the fuel system

The described tank pump is a component mounted inside the fuel tank in Mercedes ML W166 and GLE C292 models with diesel engines. Its task is to ensure proper supply to the injection system by maintaining the correct fuel flow and pressure at the inlet to subsequent system components. A properly functioning tank pump reduces the risk of air locks, power drops, and starting problems in both hot and cold engine conditions.

Benefits of using an original tank pump

Using an original fuel pump in Mercedes SUVs with OM651 and OM642 engines allows for maintaining the factory performance parameters of the power unit. This component is structurally matched to the tank geometry, fuel system characteristics, and electronic control, which results in:

• stable engine fuel supply across the full load range,
• proper cooperation with the Common Rail injection system,
• reduced risk of overheating or excessive load on the high-pressure pump,
• maintenance of proper noise and vibration levels in the cabin.

For the user, this means more predictable vehicle behavior, better engine refinement, and a reduction in the risk of costly failures resulting from insufficient fuel supply.

Technical characteristics and compatibility

The pump is designed to work with Diesel fuel, in accordance with the requirements of modern Mercedes diesel engines. The design of the tank module includes both the pumping function and integration with the fuel level sensor, which is crucial for correct level indication on the instrument cluster and for the logic of onboard systems. By using an original solution, compatibility with the factory wiring harness and the vehicle's electronic control is maintained.

Condition, verification, and service application

The item is offered as a used part, which is a cost-effective solution while maintaining original build quality. This type of component is particularly useful for:

• fuel system repairs following mechanical damage to the in-tank module,
• troubleshooting fuel supply issues or unstable engine operation,
• servicing fleet vehicles where cost optimization is important while maintaining proper functionality.

It is always recommended to verify the selection of the pump for a specific vehicle based on catalog data and manufacturer markings to ensure full compliance with the factory configuration.

Fuel system expansion and related parts

If you are planning a comprehensive repair or upgrade of the fuel system area in your Mercedes and need other elements from the same group, such as tank pump modules, assemblies integrated with level sensors, or additional mounting elements, check the available parts in the Mercedes fuel pumps and level sensors category.

When deciding to use used components in modern vehicles, it is worth learning about good practices for selecting and testing electronics and components that work with the car's electrical installation. The guide article Second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors? may be helpful, as it discusses key aspects of safely using used components in advanced automotive systems.