BMW E60 E90 E91 Bare Engine 325i 330i 525i 530i N53 N53B30A New Timing WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

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

Listing details

The offer applies to a bare engine.

The engine is sold without accessories (e.g. alternator, starter motor, manifolds, injectors, turbocharger, etc.).

BMW E60 E90 E91 Bare Engine 325i 330i 525i 530i N53 N53B30A New Timing WARRANTY is a complete powertrain unit from the N53 family, designed for BMW 5 Series E60 and 3 Series E90/E91 petrol models. The engine belongs to the Engines category and is an attractive solution for users looking for a technically advanced, inline-six cylinder unit with very low mileage. It is a proposal for those who want to restore the full efficiency of the drivetrain while maintaining the characteristic refinement and dynamics of a BMW.

Specifications and technical data

• SKU: 0421307-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 0421307
• Substitutable numbers: 11000421307, 0421307, 11000421308, 0421308, 11000421310, 0421310, 11000421311, 0421311, N53B30
• Fuel type: Petrol
• Number of cylinders: 6
• Category: Engines
• Mileage: 59 000

Technical characteristics of the N53B30A engine

The presented engine belongs to the modern family of BMW N53 petrol units, designed as inline, six-cylinder constructions with high operational refinement. The inline cylinder layout promotes even power delivery, reduces vibrations, and ensures smooth acceleration, which is particularly noticeable in daily use and during dynamic driving.

The unit is adapted for petrol fuel, which allows for full utilization of the rotational characteristics typical of BMW petrol engines – quick revving, linear power delivery, and predictable throttle response. The use of a new timing system in this unit translates into stable valve train operation, precise phasing, and a reduction in the risk of typical failures associated with the wear of timing components.

Purpose and compatibility

The N53B30A engine was developed for installation in BMW E60 and BMW E90/E91 models, making it a suitable choice when replacing a worn-out unit in these generations of the 5 Series and 3 Series. By maintaining the original architecture and factory parameters, it is possible to restore the vehicle's factory characteristics without the need for interference with the body structure or auxiliary equipment.

The engine belongs to the Engines category, which means it is intended for a comprehensive replacement of the powertrain unit, rather than just individual components. This type of solution is particularly beneficial in the case of severe damage to the old engine, when component-by-component repair is no longer economically justified.

Condition, mileage, and benefits of installation

The offered unit is a used product, which in practice means it has been in operation but retains full structural functionality. Very low mileage combined with a new timing system makes the engine an attractive alternative to the costly regeneration of a heavily worn unit. For workshops and end-users, this means shorter repair times and predictable operating parameters after installation.

Replacing the complete engine with the N53B30A allows you to:

• restore the full efficiency of the drivetrain without long-term diagnostics of the old unit,
• minimize the risk of further failures resulting from years of wear,
• maintain the original driving character typical of a BMW with an inline "six".

Why choose this engine for your BMW E60 / E90 / E91

The N53B30A engine with a new timing system is a solution aimed at users who expect stable, predictable engine performance and a good base for further operation from their BMW. The inline six-cylinder layout provides a characteristic sound and smoothness, while the new timing system reduces the risk of costly service interventions in this area.

For workshops specializing in the BMW brand, such a unit is an opportunity to offer the customer a complete, technically matched engine replacement without the need to adapt components from other generations or series. It is also a convenient solution in terms of repair logistics – one installation operation instead of many stages of old engine regeneration.

Technical support and engine selection

Before purchasing, it is worth verifying the compatibility of the N53B30A unit with the specific equipment version and production year of the vehicle to ensure full compatibility with electronics and auxiliary equipment. Both catalog data and the experience of a workshop specializing in BMW can be helpful in selecting the right solution.

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 powertrain units, check out the available parts in the BMW Engines category.

For 3 Series users interested in the durability of powertrain units, a practical guide describing typical problems and repair costs will be particularly useful – you can find it in the article Troublesome BMW E90 engines: check what can ruin your budget!, which will allow you to better assess the profitability of replacing it with the offered N53B30A engine.