BMW 3 Series E90 E91 E92 E93 LCI Complete Engine 325i 218HP N53 N53B30A WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The warranty covers the engine itself; engine accessories are covered by a 30-day warranty.

The power unit was tested before removal and is in full working order.

Listing details

The offer applies to a complete engine.

The engine comes from a right-hand drive (RHD) vehicle. The wiring harness is not compatible with left-hand drive (LHD) vehicles and requires replacement or modification.

BMW 3 Series E90 E91 E92 E93 LCI Complete Engine 325i 218HP N53 N53B30A WARRANTY is a complete powertrain unit from the N53 family, designed for the 3 Series E90, E91, and E92 models with the 325i petrol engine. This is a solution for users looking for a proven, used petrol engine with a modern design who want to restore the full performance of their BMW's drivetrain.

Specifications and technical data

• SKU: 0421307-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 0421307
• Substitutable numbers: 11000421307, 0421307, 11000421308, 0421308, 11000421310, 0421310, 11000421311, 0421311, N53B30
• Fuel type: Petrol
• Category: Engines
• Mileage: 76 000

Technical characteristics of the N53B30A engine

The N53 engine family is a modern, inline petrol unit from BMW, designed for precise combustion control and high refinement. The version used in the 325i model ensures smooth power delivery, good flexibility across the entire rev range, and the linear throttle response characteristic of BMW. The use of advanced petrol injection technology promotes efficient fuel utilization while maintaining appropriate driving dynamics.

The offered engine is a complete unit, which facilitates the replacement process in the vehicle and helps minimize vehicle downtime. As a result, it represents a practical solution both in the event of a failure of the existing engine and for planned major drivetrain repairs.

Purpose and compatibility with the BMW 3 Series

The presented engine is intended for use in BMW E90, E91, and E92 325i models, i.e., the sedan, estate (Touring), and coupe versions of the 3 Series, respectively. The unit's design is adapted to BMW's factory solutions, which allows for maintaining the original handling characteristics and drivetrain operation after replacement.

The unit belongs to the Engines category, making it an ideal fit for the needs of users looking for a complete solution for drivetrain restoration. This type of petrol engine will perform well both in daily use and in more dynamic driving, typical for 325i models.

Condition, origin, and performance parameters

The engine is offered as a used component, which allows for a significant reduction in repair costs compared to a new unit, while maintaining functionality suitable for continued operation. The specified mileage allows for a realistic assessment of wear and tear and planning for further maintenance after installation in the vehicle.

The N53B30A petrol unit is frequently chosen by workshops specializing in the BMW brand due to the good availability of service parts and the possibility of precise selection using OEM and interchangeable numbers. This facilitates integration with the existing installation in the vehicle and subsequent service maintenance.

Benefits of installing a complete BMW engine

Choosing a complete N53 family engine for the BMW 325i allows you to:

• restore the full efficiency of the drivetrain without the need for a costly rebuild of the old unit,
• maintain the original engine operating characteristics intended by the manufacturer,
• shorten repair time thanks to the completeness of the unit,
• maintain the consistency of technical solutions within the BMW brand.

For users considering the purchase of a used engine, the ability to verify it by OEM part number and reference numbers is also important – this product provides such an opportunity, which facilitates the selection of the appropriate unit for a specific vehicle configuration.

Selection, installation, and expert knowledge

To minimize the risk of error when purchasing a used engine, it is worth using selection procedures based on the VIN and OEM numbers, as well as consulting with a specialized workshop. A detailed discussion of the advantages of purchasing used power units, verification methods, and cost comparisons can be found in the article Why it is worth buying used gearboxes and engines – facts instead of myths, which serves as a practical supplement to the information about this product.

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 blocks, cylinder heads, or complete power units, check out the available parts in the BMW Engines category.