BMW E90 Oil Pump Balancer Shaft Module Unit 318i N43 Petrol Engine 5A19409

BMW E90 Oil Pump Balancer Shaft Module Unit 318i N43 is a precision lubrication system component, designed specifically for the N43 series petrol engines in the 318i model. As part of the Oil pumps and parts group, it is responsible for the stable operation of the balancer shaft and the correct transmission of the oil pump drive. This solution helps maintain smooth engine operation and reduces unwanted vibrations.

Specifications and technical data

• SKU: 5A19409
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5A19409
• Substitutable numbers: 11415A19409, 5A19409, 11417559947, 7559947
• Fuel type: Petrol
• Category: Oil Pumps & Parts

Purpose and function in the N43 engine

The oil pump balancer shaft module in the BMW 318i with an N43 petrol engine is responsible for two key tasks: stabilizing the engine's operation and driving the oil pump. A properly functioning module ensures:

• smoother operation of the four-cylinder engine at various RPMs,
• consistent lubrication conditions for moving parts,
• reduction of vibrations transmitted to the chassis and drivetrain. As a result, the engine maintains proper operating refinement, and mechanical components are better protected against accelerated wear.

Benefits of using an original BMW module

Choosing a balancer shaft module dedicated to the BMW E90 318i N43 allows you to maintain the factory operating parameters of the engine. Proper geometry, fitment to the housing, and correct alignment with the oil pump translate into:

• stable oil pressure across the entire RPM range,
• correct interaction with other lubrication system components,
• reduced risk of noise and unwanted vibrations resulting from improper balancing. This solution is particularly important when servicing N43 petrol engines, where the precision of the lubrication system has a direct impact on engine durability and driving comfort.

Condition, fitment, and service application

The offered module comes from the Oil pumps and parts group and is intended for use as a replacement component in BMW 3 Series E90 318i N43 petrol engines. It is suitable for both standard lubrication system repairs and more extensive service work, such as:

• crankshaft and piston system regeneration,
• resolving oil pressure issues,
• reducing excessive engine vibrations. Thanks to the factory-standard design, the module allows for installation in place of the original part without the need to modify other components.

How to select the correct module using OEM numbers

When selecting an oil pump balancer shaft module for the BMW E90 318i N43, it is crucial to compare the OEM part number and interchangeable numbers with the vehicle data. It is worth verifying compatibility using the VIN and service documentation to avoid installing an incompatible part. Detailed tips on the safe selection of components by number can be found in the guide Buying parts online without risk – 5 proven ways to verify component compatibility using OEM numbers and paint codes, which also discusses the practice of selecting parts for BMW.

Expanding BMW lubrication system service

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

Summary

BMW E90 Oil Pump Balancer Shaft Module Unit 318i N43 is a technically matched lubrication system component designed for N43 petrol engines. It ensures proper interaction with the oil pump, stabilizes engine operation, and helps reduce vibrations, which translates into better engine refinement and increased component durability. It is a practical choice when servicing the lubrication system in a BMW 3 Series E90 318i.