BMW 3 Series E46 318d 320d Diesel M47N Engine Oil Fluid Sump Pan 7786994

BMW 3 Series E46 318d 320d Diesel M47N Engine Oil Fluid Sump Pan is an original lubrication system component designed for BMW M47N diesel engines. Thanks to its factory geometry and precise fitment to the engine block, it ensures stable oil operating conditions and proper drainage of the lubricant under demanding operating conditions. This is a practical solution for users who want to restore the full efficiency of the lubrication system without compromising on compatibility.

Specifications and technical data

• SKU: 7789388
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7789388
• Substitutable numbers: 11137789388, 7789388, 11137786997, 7786997, 7786994, KZ
• Fuel type: Diesel
• Category: Oil Sumps

Purpose and compatibility with the M47N Diesel engine

The presented oil sump pan has been designed to work with BMW 3 Series E46 diesel engines in 318d and 320d versions equipped with the M47N unit. The design, adapted to the specifics of the diesel engine, ensures adequate working capacity, proper oil routing, and effective drainage of contaminants to the drain zone. Its original BMW origin means that factory mounting points are maintained, which facilitates installation and reduces the risk of leaks.

Construction and function in the lubrication system

The oil sump pan plays a key role as the lower reservoir for engine oil, working in conjunction with the oil pump, oil pickup, and filtration system. In this model, the following have been optimized:

• the shape of the body for even oil distribution at various engine speeds,
• the oil drain zone from the cylinder head and block,
• the sealing surfaces against the engine block.

Such a solution promotes the maintenance of stable oil pressure, which translates into safe operation of the bearings, crankshaft, and timing system in the M47N engine.

Original BMW origin and replacement numbers

The component comes from the BMW OE line, which means compliance with the manufacturer's factory standards regarding material, processing, and dimensional tolerances. The sump pan has a dedicated OEM part number and assigned interchangeable numbers, making it easy to verify its compatibility with a specific engine configuration and vehicle model year. This is particularly important when selecting components within a single model generation, where there are structural differences between engine variants.

Condition, service application, and benefits of installation

The product is offered as a used oil sump pan, which is an economical solution for lubrication system repairs, especially after mechanical damage (e.g., impact with an obstacle, collision with speed bumps). Replacing it with an original component allows you to:

• restore the tightness of the lubrication system after the old sump pan has cracked or deformed,
• minimize the risk of oil leaks and drops in lubrication levels,
• maintain the factory operating parameters of the M47N engine without the need to adapt aftermarket replacements.

Thanks to the preservation of the original geometry, the installation process is predictable, and the sump pan works with existing engine accessories, which is important both in independent workshops and for DIY repairs.

Support in part selection and additional technical information

For this oil sump pan model, reference numbers and an OEM part number are available, which facilitate unambiguous identification of the component in BMW catalogs and service systems. In case of doubt during selection, it is worth comparing the markings with the vehicle documentation or consulting a mechanic specializing in BMW diesel units to ensure full compatibility with the specific engine version.

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 other sump pans, drain plugs, or mounting elements, check the available parts in the BMW Oil Sump Pans category.

To better understand the advantages of using original components, including used OEM parts, it is worth reading an article describing the importance of factory parts in the context of safety and durability – more information can be found in the material on the quality and advantages of used OEM parts.