Mercedes W166 W204 W221 M276 Petrol Engine Oil Pump A2761800000

Mercedes W166 W204 W221 M276 Petrol Engine Oil Pump is an original component from the Oil pumps and parts group, designed for M276 petrol engines used in popular Mercedes SUV and sedan models. This used OEM pump ensures factory-fit, stable lubrication pressure, and predictable oil system performance under demanding operating conditions.

Specifications and technical data

• SKU: A2761800000
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2761800000
• Substitutable numbers: A2761800000, A 276 180 00 00
• Fuel type: Petrol
• Category: Oil Pumps & Parts

Purpose and compatibility with the M276 engine

The presented oil pump has been designed to work with the M276 petrol engine installed in, among others, the W166, W204, and W221 series. This ensures the maintenance of factory oil flow and pressure parameters, which is crucial for the durability of bearings, the crankshaft, the timing system, and cylinder head components. A design dedicated to a specific power unit reduces the risk of installation issues and eliminates the need for modifications.

Construction and role in the lubrication system

The oil pump is responsible for drawing oil from the oil pan and pumping it into the lubrication channels in the engine block and cylinder head. In the M276 petrol engine, a properly functioning pump:

• maintains stable oil pressure across the entire RPM range,
• ensures proper lubrication of moving parts,
• reduces the risk of seizure under high thermal loads,
• supports even cooling of critical engine components.

Thanks to the use of an original Mercedes solution, compliance with factory tolerances and the operating characteristics of the power unit is maintained, which translates into predictable operation and easier diagnostics of potential faults.

Benefits of using an original Mercedes oil pump

Choosing a used OEM oil pump for a Mercedes is a solution that combines controlled costs with the preservation of factory specifications. The most important advantages include:

• Full structural compatibility with the M276 engine lubrication system,
• factory mounting points and fitment to the engine housing,
• no need for software adaptation or additional modifications,
• easier part identification via OEM number and interchangeable numbers,
• consistency with other elements from the Oil pumps and parts group.

Such a solution is particularly beneficial for repairs of higher-power petrol engines, where stable lubrication has a direct impact on the service life of the power unit.

Professional selection by OEM number and VIN

To select the correct oil pump for a specific Mercedes version, it is worth using the OEM number and interchangeable numbers assigned to the given engine variant and model year. This allows you to avoid mistakes resulting from structural differences between individual generations of M276 units. The detailed verification process is described in the article Guide: how to choose the right car part by VIN and OEM number, where you will find practical steps, a list of questions for the seller, and tips on checking parameters.

Used OEM part vs. replacements

In the case of components responsible for engine lubrication, the choice between a replacement and an original part is of particular importance. A used OEM oil pump retains its factory geometry, operating characteristics, and compatibility with other components of the system. If you are considering different options, the article 5 reasons why a used OEM part is a better choice than a replacement may be helpful, as it discusses practical selection criteria using examples of popular models.

Expanding the Mercedes lubrication system

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as oil lines, pressure control elements, or additional lubrication system components, check the available parts in the Mercedes Oil pumps and parts category.