BMW 3 X3 Series E46 318d M47N E83 2.0d M47N2 Diesel Engine Oil Pump 7789840

BMW 3 X3 Series E46 318d M47N E83 2.0d M47N2 Diesel Engine Oil Pump is an original lubrication system component designed for M47N and M47N2 diesel units. It ensures stable oil pressure in the engine, which translates into safe operation of all moving parts and reduced mechanical wear. This used OEM component is a sensible choice for workshops and conscious drivers looking for a proven service solution at an attractive price.

Specifications and technical data

• SKU: 7805814
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7789840
• Substitutable numbers: 11417805814, 7805814, 11417789840 11412247217, 7789840 2247217
• Fuel type: Diesel
• Category: Oil Pumps & Parts

Application and compatibility

The presented oil pump is intended for BMW diesel engines from the M47N and M47N2 families used in the 3 Series E46 318d and X3 E83 2.0d models. The OEM design guarantees a proper fit to the factory lubrication system, correct cooperation with the pump drive, and appropriate oil flow parameters.

By maintaining the original geometry of the oil channels and the housing, the pump maintains the required operating pressure throughout the entire RPM range, which is crucial for the durability of the crankshaft, bearings, timing system, and turbocharger.

Construction and technical characteristics

The pump belongs to the Oil pumps and parts group, which means it is a component responsible for the forced circulation of oil in the engine. The applied OEM design ensures:

• precise fit to the oil pan and engine block,
• stable maintenance of oil pressure under typical diesel operating conditions,
• adequate performance during cold starts and under high load.

The lubrication system in BMW diesel engines is particularly stressed due to high combustion pressures, which is why using an original oil pump has a direct impact on the engine's service life and reduces the risk of seizure.

Benefits of using an original oil pump

Choosing an original oil pump for a BMW 3 / X3 with a diesel engine is a solution that allows you to maintain the factory operating parameters of the power unit. The most important advantages include:

• Proper lubrication efficiency – correct oil flow to the bearings, camshaft, and turbocharger.
• Compatibility with the factory system – no need for modifications, drilling, or adjusting elements.
• Consistency with factory engine control strategies – the pump operates within the parameters specified by the manufacturer.
• Reasonable repair cost compared to a new element while maintaining original manufacturing quality.

For workshops specializing in the BMW brand, using such a pump means predictable installation and a lower risk of complaints related to incorrect oil pressure.

Condition, verification, and part selection

The item is offered as a used original BMW part, which in practice means it comes from disassembly and has been verified for suitability for further use. This type of component is particularly attractive for diesel engine repairs, where the cost of new lubrication system elements can be high.

To select the correct oil pump for a specific BMW vehicle, it is worth using the OEM part number or interchangeable numbers visible in the technical specification section. This helps avoid mistakes resulting from differences in model year, engine version, or minor design changes.

If you want to streamline the purchasing process and be sure about the component's compatibility with your car, use the practical tips described in the guide Safe purchase of used car parts online – a step-by-step guide, prepared for drivers and workshops.

Expanding the lubrication system in BMW

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as additional pump drive modules, mounting elements, or cooperating lubrication system components, check the available parts in the BMW Oil pumps and parts category.