BMW Z4 E85 E87 E90 Engine Oil Sump Pan N52 130i 323i 325i 330i 2.5i 3.0i 7539413

Visual condition of the part

The product shows signs of use visible in the photos.

BMW Z4 E85 E87 E90 Engine Oil Sump Pan N52 130i 323i 325i 330i 2.5i 3.0i is an original lubrication system component designed for N52 petrol engines in selected BMW models. This used OE-line oil sump ensures factory-fitment to the engine block, proper oil flow, and stable operating conditions for the powertrain. It is an ideal solution for users seeking a technically verified component rather than aftermarket replacements with uncertain parameters.

Specifications and technical data

• SKU: 7539413-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7539413
• Substitutable numbers: 7539413, 11137539413
• Fuel type: Petrol
• Category: Oil Sumps

Purpose and function in the N52 petrol engine

The oil sump in the N52 petrol engine plays a key role in maintaining stable oil pressure and ensuring the proper return of lubricant to the pump. It is responsible for:

• collecting the appropriate amount of operating oil,
• ensuring the correct oil level under various loads and engine speeds,
• stabilizing oil temperature through contact with airflow under the chassis,
• sealing the lower part of the powertrain.

In BMW N52 petrol engines, used in models such as the Z4 and 3 Series, a correctly selected oil sump is essential for the durability of the bearings, crankshaft, and timing system, as it affects the continuity of the oil film throughout the entire lubrication system.

Construction and fitment for BMW Z4 E85/E86 and E87/E90

The BMW oil sump from this reference has been designed as a component integrated with the lower part of the engine, taking into account the geometry of the N52 block and the layout of the oil channels. This means:

• factory-standard placement of mounting points to the engine block,
• adaptation to the stock lubrication system used in the BMW Z4 E85/E86 and selected E87 and E90 versions,
• compatibility with original seals and mounting hardware,
• preservation of the rigidity of the lower part of the powertrain as intended by the manufacturer.

As a result, installation is predictable for the mechanic, and the connection to the engine block maintains tightness and proper geometry, which is important when operating at higher RPMs and under dynamic driving conditions.

Benefits of using an original BMW oil sump

Using a used, original oil sump instead of a damaged or leaking one allows you to restore the proper operating conditions of the lubrication system without interfering with the manufacturer's design. The main advantages include:

• factory fitment for the N52 engine – no need for modifications, drilling, or adjustments,
• preservation of the stock internal geometry of the sump, which reduces the risk of turbulence and oil aeration,
• compatibility with engine accessories intended for the given generation of BMW Z4, E87, and E90,
• the possibility of an economical repair of the lubrication system while maintaining OE standards.

In the case of petrol engines, where oil operates at higher temperatures than in many diesel units, a properly designed oil sump helps maintain stable lubrication conditions even during prolonged, dynamic use.

Condition, verification, and installation recommendations

The item comes from dismantling and is offered as a used BMW oil sump, which allows for a cost-effective restoration of the lubrication system's efficiency. Before installation, it is recommended to:

• thoroughly clean the interior of old oil residues and deposits,
• check the flatness of the surface mating with the engine block,
• use a new gasket or appropriate sealant in accordance with the BMW service procedure,
• check the condition of the mounting bolt threads.

A correctly installed oil sump reduces the risk of leaks, oil pressure drops, and unwanted dashboard warnings, which translates into safer operation of the N52 petrol unit.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as additional sumps, covers, or lower engine components, check out the available parts in the BMW Oil Sumps category.

For drivers interested in a broader perspective on the operation and servicing of powertrains, including the selection of appropriate accessory components, the guide article regarding Mercedes engines may be helpful – you can find it here: Reliability under the star – how to take care of engine accessories in popular Mercedes-Benz C-Class and E-Class models?.